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In the descending order of a group in th...

In the descending order of a group in the periodic table which of the following would be true
1) All the atoms have the same number of valence electrons
2) Gram atomic volume increases
3) Electronegativity decreases
4) Metallic character decrease and basic nature of their oxides decreases
Select the correct answer using the codes

A

2,3 and 4

B

1,2 and 4

C

1,3 and 4

D

1,2 and 3

Text Solution

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The correct Answer is:
D
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Which of the following properties show gradual decrease with increase in atomic number across a period in the periodic table?

(a) Electropositive nature of the element(s) increases down the group and decreases across the period. (b) Electronegativity of the element decreases down the group and increases across the period. (c) Atomic size increases down the group and decreases across a period (left to right). (d) Metallic character increases down the group and decreases across a period. On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9. Name the element which shows maximum valency.

(a) Electropositive nature of the element(s) increases down the group and decreases across the period. (b) Electronegativity of the element decreases down the group and increases across the period. (c) Atomic size increases down the group and decreases across a period (left to right). (d) Metallic character increases down the group and decreases across a period. On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9. Name the most electronegative element.

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