Shubham Jha - Class 9
How many electrons are present in M-shell of an element with atomic number 20?
Anonymous Quiz
5
8
12
20

3 comments

Siddhi Jadhav
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Siddhi Jadhav
Sir pzz give me 9th Science 1 chapter lecture
𝑵. 𝑭𝒂𝒕𝒆
Sir 8 kaise