Question

In the modern periodic table, the element Calcium (atomic number = 20) is surrounded byelements with atomic numbers 12, 19, 21 and 38. Which of these elements has physical and chemical properties resembling those of Calcium and why?​

Answer 1

Answer:

12 , 38

Explanation:

Elements having atomic numbers 12 and 38 have similar properties to that of calcium because they lie in the same group ; have same number of valence electrons.

This leads to them having similar reaction and physical, chemical properties.

Answer 2

The and is 12 magnesium and

Strontium (38) as they are present in the same group the have same no of electrons in thier outermost shell

Hence they have almost similar physical and chemical properties

I hope this helps ( ╹▽╹ )