Question

32. The following table shows the positions of four elements A, B, C and D in the periodic
table.
Group
1
2
3
to
12
13
14
15
16
17
Period
2
A
B
3
с
D
Using the above table answer the following questions.
i Which element will form only covalent compounds?
ii. Which element is a metal with valency 2?
iii. Out of C and D which one has bigger atomic radius and why?​

Answer 1

Answer:

Explanation:

Element E will from only covalent compounds,

Element D will have valency 2 which is metal,

Element B is a non metal having valency 3,

and Element D has larger radius because as move right of the periodic table,

atomic radius decreases.

Electrons come closer to the nucleus due to opposite charges of electron and nucleus.

The elements C and F are called as Halogens.