Question

the given figure depicts the atomic structure of an atom
Answers :
1. Atomic No. : 8
2. Atomic Mass : No. of Protons + No. of neutrons = 18 u
3. Valence Electrons / Valency = 2
4. This x element is metal or non - metal ​= Non - metal
answer also given

Answer 1

Answer:

1. Atomic No. : 8

2. Atomic Mass : No. of Protons + No. of neutrons = 18 u

3. Valence Electrons / Valency = 2

4. This x element is metal or non - metal = Non - metal

Answer 2

Atomic number = Number of protons = 8

Atomic mass = Number of protons + Number of neutrons = 8 + 10 = 18 u

Valence electrons = 6

Valency of ‘X’ = 8 - 6 = 2

‘X’ should be non-metal because there are six valence electrons hence it will take two more electrons to complete its outermost shell.