Question

In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium.....?

Answer 1

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The element with atomic number 12 has same chemical properties as that of calcium.

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This is because both of them have same number of valence electrons (2).

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Answer 2

Hey dear✔✔↙↙

The element which have atomic number 12, have same physical and chemical properties resembling calcium because both of them have same valence electrons that is 2

Answer by@brokengirl21❤