Question

The positions of the A, B, C, D elements in the modern periodic table are given in the

table below. Look at the table and answer the following questions.

Group-1 Group-2

Period-3

A

B

Period-4

C

D

i) Which element is having maximum seize of atomic radius? Why?

ii) Which element is having lowest metallic property? Why?​

Answer 1

Answer:a) E

b) D

c) B

d) The noble gases

e) D has bigger atomic radius.The atomic radius decreases in moving from left to right along a period.This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.

Explanation:

Answer 2

Answer:

(i) C

(ii) D

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Explanation:

Element C has maximum atomic size .because on moving down the group atomic size increases . across the periodic atomic size decreases

Element D has lowest metallic character because on moving down the group metallic charactee increses and across the periodic metallic character decreases