English, asked by ricky9941, 10 months ago

elements of atomic number A,B,C.D with atomic number
11, 15. 19,20
Predict the following:
a) Two clements lying in the same group
b) Elements in the third period.​

Answers

Answered by chandhukundhu36
3

Answer:

sodium, sulphur calicium, pottasium

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