Q40 "The valence electrons determine the kindand number of bonds forme

1.	Q40 "The valence electrons determine the kindand number of bonds formed by an element".Justify.
Answer» Ans :- Generally, If valence shell contains 1 to 3 electrons are most electromotive and lose electrons and form positive ions. So, they form ionic compounds. If valence shell contains 4-7 electrons, they generally try to form covalent bond by sharing of electrons. If they contain 7 electrons in outermost shell, single bond is formed as in Cl2. If they contain 6 electrons in outermost shell, double bonds are formed as in O2. If they contain 5 electrons in outermost shell, triple bonds are formed as in N2. If they contain 7 electrons in outermost shell, gain of one electron makes it negative ion. So, it can form ionic bond with the cation also as NaCl.

Q40 "The valence electrons determine the kindand number of bonds formed by an element".Justify.

Answer»

Ans :- Generally, If valence shell contains 1 to 3 electrons are most electromotive and lose electrons and form positive ions. So, they form ionic compounds.

If valence shell contains 4-7 electrons, they generally try to form covalent bond by sharing of electrons. If they contain 7 electrons in outermost shell, single bond is formed as in Cl2. If they contain 6 electrons in outermost shell, double bonds are formed as in O2. If they contain 5 electrons in outermost shell, triple bonds are formed as in N2.

If they contain 7 electrons in outermost shell, gain of one electron makes it negative ion. So, it can form ionic bond with the cation also as NaCl.

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