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What is moden periodic table |
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Answer» Properties of elements are periodic function of there atomic Number??? IN this elements are arranged in order of their atomic number in ascending order Law of Modern Periodic Table states that\xa0properties of elements are the periodic function of their atomic numbers.\xa0In the modern periodic table, elements are arranged in order of their increasing atomic numbers.Explanation of Modern Periodic Table:\tElements are arranged in order of their increasing atomic numbers.\tThe vertical columns are known as groups and horizontal columns are known as periods; in the modern periodic table.\tThere are 18 groups and 7 periods in the modern periodic table.Groups in Modern Periodic Table:1st\xa0group:\xa0Alkali metals are placed in the 1st group in the modern periodic table. Hydrogen is also placed in the 1st group although hydrogen is not an alkali metal.2nd\xa0group:\xa0Alkaline earth metals are placed in the 2nd group in the modern periodic table.Elements placed in 1st and 2nd groups in the modern periodic table are collectively known as light metals.3rd\xa0to 12th\xa0group:\xa0Transition elements are placed from 3rd to 12th group in the modern periodic table.13th\xa0group:\xa0Metals are placed in the 13th group; except boron which is a metalloid.14th\xa0group:\xa0Carbon, silicon, germanium, tin and lead are placed in this group. Among them, carbon is a non-metal, silicon and germanium are metalloids and tin and lead are metals.15th\xa0group:\xa0Nitrogen, phosphorous, arsenic, antimony and bismuth are place in the 15th group; among which nitrogen and phosphorous are non-metals, arsenic and antimony are metalloids and bismuth is a metal.16th\xa0group:\xa0Oxygen, sulphur, selenium, tellurium and polonium are placed in this group, among which oxygen, sulphur and selenium are non-metals, tellurium is metalloid and polonium is a metal. |
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