Question

An atom of an element has 5 electrons in its L-shell.

i)What is the atomic number of the element.

ii)State its valency

III)Identify the element

plz, tell me answer​

Answer 1

Answer:

i) 7

ii) 3

iii) Nitrogen (N)

Explanation:

i) No. of e- in L shel = 5

So, K shell is full.

Max no. of e- in K shell = 2

Therefore, total no. of e- in atom = 7

So, no. of protons = 7

So, atomic no. = 7

ii) Valency = 8-5 = 3

iii) Element with atomic no. 7 - Nitrogen

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Answer 2

Explanation:

1:- 3

2:- 7

3:- NITROGEN