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XeF6

Hybridization=arounded atoms to central atom+1/2(valence e- of central atom -bonded e- )

SO,hybridization of XeF6=6+1/2(8–6) =6+1

i.e.6+1=(bonded e-) +(lonpair)

So,hybridization=7=sp3d3

Its hybridisation is sp3d3 however its geometry is capped or distorted octahedral(square bipyramidal) one and not pentagonal bipyramidal. The flourine atoms occupy the vertices of the octahedron and lone pairs keeps on moving in space to minimise repulsion, and hence distorting the octahedral geometry.

pH = -log [10^-9]pH= 9basic in nature

how is it possible

2,2 dimethyl propanonamine

wrong ans

sorry, that was the IUPAC name

common name is neo-pentyl amine

Option D is right thanks

option d is right thanks

greater the basic strength , lower will be its pKb , because pKa is is more for more basic compounds

so, nH3 will be the answer, because it is least Basic out of all.

Option C is the answer

1

2

Without doing any deep research on the subject, these are two quotes by Jawaharlal Nehru pertaining to the River Ganga :

The Ganga, especially, is the river of India, beloved of her

people, round which are intertwined her memories, her hopes

and fears, her songs of triumph, her victories and her

defeats. She has been a symbol of India's age-long culture

and civilization, ever changing, ever flowing, and yet ever

the same Ganga

- Pandit Jawahar Lal Nehru

The Ganga to me is the symbol of India’s memorable past which has been flowing into the present and continues to flow towards the ocean of the future.

-Pandit Jawahar Lal Nehru

The Holy River of India

And finally this :

Rahul quoted Nehru as saying, "I have been attached to the Ganga and the Jamuna rivers in Allahabad ever since my childhood and, as I have grown older, this attachment has also grown. The Ganga, especially, is the river of India, beloved of her people. She has been a symbol of India's culture and civilization, ever-changing, ever-flowing and ever the same Ganga. She reminds me of the snow-covered peaks and the deep valleys of the Himalayas..."

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इस नियम के अनुसार स्कन्दित करने वाले आयन की संयोजकता जितनी ज़्यादा होती है उसकी स्कन्दन क्षमता उतनी ही अधिक होती है अतः हार्डी शुल्जे के नियम से

(1) As2S3सॉल(आर्सेनिक सल्फाइड ) (ऋणावेशित सॉल ) केस्कन्दनके लिए स्कन्दन क्षमता का बढ़ता क्रम

NaCl < mgcl2< AlCl3

इस नियम के अनुसार स्कन्दित करने वाले आयन की संयोजकता जितनी ज़्यादा होती है उसकी स्कन्दन क्षमता उतनी ही अधिक होती है अतः हार्डी शुल्जे के नियम से

(1) As2S3सॉल(आर्सेनिक सल्फाइड ) (ऋणावेशित सॉल ) केस्कन्दनके लिए स्कन्दन क्षमता का बढ़ता क्रम

NaCl < mgcl2< AlCl3

Ithasan evergreen habit, both indoors and whenplantedin the landscape, and, in optimal conditions, cangrowup to 8 feettalland 2 feet wide. However, these long-livedplantswill probably never reach this massiveheightwhengrowninside. A matureheightof around 3 feet is more reasonable for indoorplants.

8m 73 cm is the height

8m 73cm is the height

8m .73cm........... .... .........

Original height = 38cmincrease in height= 8m 35cmnew height = 38 cm + 8m 35cm= 8m 73 cm.

8m 35 cm= 8×100+35= 835mpanted time length= 38 cmgrown. length. = 835 cm-----------–-------------------------------total length of bamboo= 873cm= 8mt 73cm

8m 73 cm is the height

the tall of plant now=873cm

the answer is 8m 73 cm

Most of the carbon compounds do not conduct electricity because they have low melting and boiling points.Nature of bonding in carbon compounds is different from that observed in ionic compounds thus they are poor conductors of electricity.Bonding in carbon compounds does not involve the formation of ions which indicates the absence of ions in carbon compounds.So we can say that in carbon compounds, the bonding between carbon and other atoms is non-ionic in nature.

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The valence of an element is the maximum number of hydrogen or chlorine atoms that can combine with an atom of the element.Carbonis in Group 14 of the Periodic Table, so acarbonatom has four valence electrons. It can also bond with four atoms of chlorine. The prefix tetra- means four, socarbon is tetravalent.

Because of its two unique property

* CATENATION - carbon can make bond with another carbon atom

*TETRAVALENT- it can react with element having valency four and less than four

Sodium carbonate (washing soda) isusedin glass, soap, and paper industries.

It isusedin the manufacture of sodium compounds such as Borax.

Sodium hydrogen carbonate is also ingredient in antacids. ...

It is alsousedinsoda-acid fire extinguishers.

The valence of an element is the maximum number of hydrogen or chlorine atoms that can combine with an atom of the element. Carbon is in Group 14 of the Periodic Table, so a carbon atom has 4 valence electrons.It can also bond with 4 atoms of chlorine. The prefix tetra - means four, so carbon is tetra valent.

Carbon forms largeno. ofcompoundsdue to the following reasons: Catenation: The property ofcarbonelement due to which its atoms can join one another toformlongcarbonchains is called catenation. Tetravalency:Carbonhas a valency of four.

main reason is that carbon have two special characteristics which are catenation and tetravalency.

Carbon is one of the most essential element required to sustain life. Our body requirs a number of carbon containing compounds such as carbohydrates, fats, lipids, proteins etc for proper functioning and growth. These compounds are present in nature or more appropriately produced by ‘living organisms’, thatswhy calledorganic compounds. And therefore the study is called organic chemistry.

hydrogen and oxygen are two compound because

The law of multiple proportion states that the masses of one element which combine with a fixed mass of the second element are in a ratio of whole numbers.The two compounds of H and O have a hydrogen content of 5.93% and 11.2%.Compound 1Hydrogen mass = 5.93%Oxygen mass = 100-5.93 = 94.07%The number of parts of O that combine with H = 94.07/5.93 = 15.86 partsCompound 2Hydrogen mass = 11.2%Oxygen mass = 100- 11.2 = 88.8%The number of parts of O that combine with H = 88.8/11.2 = 7.9 partsRatio of the masses of O that combine with fixed mass of H = 15.86: 7.9 = 2:1This is a whole number ratio as stated by Law of multiple proportion.

In organic chemistry, the cycloalkanes are the monocyclic saturated hydrocarbons.

In other words, a cycloalkane consists only of hydrogen and carbon atoms arranged in a structure containing a single ring, and all of the carbon-carbon bonds are single

Cycloalkanes are hydrocarbons in cyclic structure, meaning that the carbons of the molecule are arranged in a ring form

cyclopropane C3H6

cyclobutane C4H8

cyclopentane C5H10

cyclohexane C6H12

If dharma is given up the world will change.The world will become unruly and people would start to fight with each other.

bro I can not be able to understand that......

WHAT YOU WANT .

prime factors of 1296 = 6*6*6*6

As we know, the stronger the interactions, the more energy will be required to break them. So,due to thesymmetryinpara- positionit has much stability and so it requires much amount of energy, and in such trend, the meta position becomes intermediate and ortho position is highly unstable and so it will require less energy to melt. Thus,the expected trends of the melting and boiling pointssould follow as : para> meta> ortho.

your Answer is wrong

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The maindifference between strongandweak acidsorbasesin the degree of dissociation.Strong acidstotally ionize, releasing all the hydrogen ions.Weak bases, only partially ionize

Weak” means when you dissolve it in water that not all of it dissociates into its ions.

“Strong” means 100% of the acid or base dissociates into its ions when you dissolve it in water.

for example, a 1M solution of acetic acid in water will only dissociate about 5%. that means 95% dissolves but remains as CH3COOHCH3COOH. Only 5% of the original amount becomes CH3COO−CH3COO− and H+H+ in water.

Similarly, if you make a 1M solution of HClHCl, then 100% of it will dissociate into H+H+ and Cl−Cl−.

Similarly for bases, NaOHNaOH is strong and fully dissociates in water into Na+Na+ and OH−OH− whereas ammonia, NH3NH3, is weak and only a small fraction of it becomes ammonium, NH+4NH4+, and hydroxide ions, OH−OH−.

All of this discussion works in concentration ranges we typically work with in the lab. about 1 molar to .01 molar.

if the concentration is very high then even HCl is not going to dissociate because of LeChatelier’s principle.

If the concentration is very low then even acetic acid and ammonia will ionize 100% again, because of LeChatelier’s principle.

Thus, a better way to describe acids and bases that works for all concentration ranges is to use the equilibrium constants for the dissolution of the species. for an acid, we use Ka or more compactly, pKa. small pKa values mean stronger acids and larger pKa values mean weaker acids.

for bases, we use Kb values or again, pKb. small pKb values mean stronger bases and larger pKb values mean weaker bases.

A strong acidis anyacidthat ionizes completely in solutions. This means it gives off the greatest number of hydrogen ions or protons when placed in a solution. Ionsarecharged particles.

A weak baseis abase that does not ionize fully in an aqueous solution. As Bronsted–Lowrybases are proton acceptors, aweak basemay also bedefinedas a chemicalbasein which protonation is incomplete. This results in a relatively low pH compared to strongbases.

Boric acidbehaves as a Lewisacid and accepts OH-ions from water.It doesnot dissociate to produce ions rather forms metaborate ion and in turn release ions. Henceboric acidis consideredaweak acid.

Boric acidbehaves as a Lewisacid and accepts OH-ions from water.It doesnot dissociate to produce ions rather forms metaborate ion and in turn release ions. Henceboric acidis consideredaweak acid.

P1=760 mm Hg

V1=300 mL

T1=298k

V2=640mL

T2=283k

P2= ?

Now,

We know that;

P1 V1 = P2 V2 is same as P1 V1/T1 = P2 V2/T2

=760×300/298=640×P2/283

= 338.317953020134

Boric acidbehaves as a Lewisacidand accepts OH-ions from water.It doesnot dissociate to produce ions rather forms metaborate ion and in turn release ions. Henceboric acidisconsidered a weak acid.

Borax (Na2B4O7.10H2O)

Borax is the sodium salt of boric acid. B orax occurs naturally as tincal (suhaga) in certain dried up lakes of india, Tibet, Srilanka and USA. It contains about 55% borax.

PREPERATION:-

From tincal:Tincal is boiled with water and the so;ution is then filtered to remove impurities of sand, clay etc. The filterate is concentrated till crystallization begins and then cooled. The crystals of borax are separated by filteration.

From colemanite (Ca2B6O11):

Ca2B6O11 + 2Na2CO3 -----Heat-----» Na2B4O7 + 2NaBO2 + 2CaCO3↓

4NaBO2 + CO2 -----------» Na2B4O7 + Na2CO3

The insoluble calcium carbonate is filtered off .The remaing solution containg of borax and sod.metaborate is then treated with CO2 to convert sod.metaborate to borax.The solution is now concentrated and cooled to crystallize borax

Boric acid is prepared by treatingborax withnitric acid.Nitric acidispreferred to hydrochloric acid because sodium nitrate is morereadily soluble than sodium chloride.Sulfuric acidis notemployed because it is not so readily washed out.

Fluorine is highly electronegative. It has a great affinity for theelectronsbut is not capable of being stable by taking anelectron. ...Chlorinehashigher electron gain enthalpy thanfluorine because due to small size of fluorine some energy is utilized in overcoming the force of repulsion amongelectrons.

The properties shown by the solution include:

1.Starch solutionis a colloid and particles of colloid are big enough to scatter light. So starch solnshows tyndall effect.

2. Heterogeneous Colloid

3. It can be filtered using a filter paper

4. In appearance it will appear as translucent.

1s<2s<2p id is the correct order

If you divide a polynomial f(x) by (x - h), then theremainderis f(h). Thetheoremstates that ourremainderequals f(h). Therefore, we do not need touselong division, but just need to evaluate the polynomial when x = h to find theremainder

Example2x2−5x−1 is divided by x−3

2(3)2−5(3)−1 = 2x9−5x3−1= 18−15−1=2And that is the remainder we got from our calculations above.

Hii thanks for the help

Ca(OH)2+2HNo3= Ca(No3)2+2H2O

First of all density of 0.02M aq. soln. of NaCl should be known/given,so that mass of soln. will be known.

If density assumed to ne one(which is actually greater than one):then ;

no. of moles of NaCl in 4L of soln.=0.08 mole.

Mass of 4+1=5L of water=5kg.

So molality=0.08/5=0.016 mols per kg.

If the phase change of a substance involves a latent heat, then this is called a First Order phase transition. An ice cube takes time to melt, because of the latent heat. The same goes for the liquid to vapor phase change. BUT, as the temperature (and pressure) are raised toward the critical values, the latent heat for the liquid to vapor transition becomes smaller and reaches zero at the actual critical point.

There are some substances that have phase transitions that do NOT include a latent heat. These are referred to as Second Order phase transitions. The superfluid transition in liquid helium-4 is one example. Various ferromagnetic transitions are also second order. Essentially, the entire sample undergoes the transition at the same instant.

moles of O in 1 moles of Mg3(PO4)2 = 8

for 1 mole of O → 1/8 mol Mg3(PO4)2 O so, for 0.25 mol of O → 1/8*0.25 =1/32 = 0.03125

option D

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