Physics, asked by ydvtarun2020, 2 months ago

Element ABCD have atomic no 1 8,11 19 respectively choose the odd element and give reason for your answer

Answers

Answered by amarkzk0000

0

Answer:

B

Explanation:

as 1 = hydrogen

11 = sodium

19 = potassium as atomic number are from 1st group but elelment with atomic number 8 is oxygen , which is in second period but not in the 1st group

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