Which of the given statements is not true?

a. Valency of carbon is greater than that of nitrogen.
b. Down the group valency remains the same.
c. Across a period, valency decreases.
d. Down the group, number of shells increases.

a and c

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c only

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b only

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d and b

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Solution

The correct option is B c only

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Similar questions

Give scientific reasons:

1. Atomic size increases down the group.

2. Metallic character decreases from left to right in a period.

3. Elements in the same group show same valency.

Which one of the following does not increase while moving down the group of the periodic table?

(a) atomic radius (b) metallic character (c) valence electrons (d) shells in the atoms

On moving down the group, the number of valence electrons___________________(remain the same/increases/decreases)

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