Question

kiske Valency shell main 4 eloctron ke sath 3 shell hai in general science​

Answer 1

Answer:

Electronic configurations are: X = (2, 4) and Y = (2, 8, 4) and hence atomic numbers are 6 and 14 respectively. Hence, X is identified as carbon and Y as silicon.

ii] Yes, there is a similarity between X and Y. Both have 4 valence electrons and hence have the same chemical properties and belong to the same group.

Answer 2

Answer:

Atomic Number Element Energy Levels or "shells"

3 Lithium (Li) 1

4 Beryllium (Be) 2

5 Boron (B) 3

6 Carbon (C) 4