Chemistry, asked by hulala, 11 months ago

Group number and period number of element having atomic number 20 respectively in the Modern
Periodic Table are
(1) 2nd and 4th
(2) 1st and 4th
(3) 2nd and 3rd
(4) 1st and 2nd

Answers

Answered by ashwith30

Answer:

option 1is correct atomic number 20 element is calcium and calcium is 2nd group and 4th period

Answered by mumbaiindians456654

Answer:(1)

Explanation:

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