Question

Identify the element in period 3 to most likely have similar chemical properties to Ca.

Answer 1

Answer: The element having similar chemical properties that of calcium present in period 3 is magnesium.

Explanation:

In a periodic table, elements are arranged in 18 vertical columns known as groups and 7 horizontal rows known as periods.

Elements arranged in a group show similar chemical properties because of the presence of same number of valence electrons.

We are given:

Calcium is the 20th element of the periodic table having electronic configuration $1s^22s^22p^63s^23p^64s^2$

It has 2 valence electrons.

The element present in period 3 and have the same number of valence electron or in the same group is magnesium.

Hence, the element having similar chemical properties that of calcium present in period 3 is magnesium.