Question

OR
In the following table, the mass numbers and the atomic numbers of certain elements are given.
Element
A
B
С
D
E
Mass no.
1
14
40
40
At. no.
1
زرا
17
18
20
i. Select a pair of isobars from the above table.
i. What would be the valency of element E listed in the above table?
ii. Which two sub-atomic particles are equal in number in a neutral atom?​

Answer 1

Answer:

answer

Explanation:

a) element D,E

b) valency of E = 2

c)?