Question

In a sample of calcium metals, how many electrons does an atom of calcium contribute to the sea of delocalized electrons?

Answer 1

ANSWER

Calcium atom has two electrons to contribute to the sea of delocalized electrons

EXPLANATION

Calcium belongs to group two metals with the atomic number of 20

The electronic configuration of calcium is written below as

$\text{ }_{20}\text{Ca }\rightarrow\text{ 1s}^22s^22p^63s^23p^64s^2$

In the above configuration, calcium has two electrons at its outermost shell. This means it valence electrons is 2

Therefore, calcium is readily to lose the two electrons two attain it octet configuration.

Hence, calcium atom has two electrons to contribute to the sea of delocalized electrons