Question

The data represents the distribution of electrons ,protons and neutrons in atoms of
four elements A,B,C,D.
Elements
Protons
Neutrons
Electrons
A
20
20
20
B
17
18
17
С
17
20
17
D
18
22
18
Answer the following questions :
(a) Write the electronic configuration of element B.
(b) What would be the charge on D?
(c) Which two elements form a pair of Isotopes?
(d) Which two elements form a pair of Isobars?
(e) What would be the valency of element C?

Answer 1

Answer:

a) 2 8 7

b) neutrul or no charge

c) B and C

d) A and C

e) 1