Question

Name any two elements that have two electrons in their valence shell.

Answer 1

The elements Be, Mg and Ca each having two electrons in their outermost shells are in periods 2, 3, and 4 respectively of the modern periodic table. Answer the following questions, giving justification in each case : (i) Write the group to which these elements belong. (ii) Name the least reactive element. (iii) Name the element having largest atomic radius.

Answer 2

Explanation:

beryllium and magnesium have two electrons in outermost shell