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Periods

On moving fro...

Question

On moving from top to bottom in a group in the periodic table, valency:

A

increases

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B

decreases

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C

remains same

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D

first increases then decreases

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Solution

The correct option is C remains same
On moving from top to bottom in a group in the periodic table, valency remains same.

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Similar questions

Explain the following
(i) Electronegativity of elements increase on moving from left to right in the periodic table.

(ii) Ionisation enthalpy decreases in a group from top to bottom.

Q. Assertion (A) : In the periodic table of chemical increase from top to bottom in a group
Reason (R) : In a group, the atomic radii generally increase from top to bottom.

Q. Assertion :In the periodic table of chemical elements, ionisation energy is always found to increase from top to bottom in a group. Reason: In a group, the atomic radii generally increase from top to bottom.

Q. On moving from left to right in a period of the periodic table, the atomic number of elements increases. What happens to the size of atoms of elements on moving from left to right in a period?

(a) increases
(b) decreases
(c) remain the same
(d) first increases then decreases

Q. Which of the following statements is incorrect regarding the valency of an element?
(a) Valency of alkali metals is 2
(b) Valency of group 18 elements is zero
(c) Valency of elements first increases till group 14 and then decreases across a period in the Modern periodic table.

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