If an element A belongs to Period 3 and Group II then it will have -3 shells and 2 valence electrons2 shells and 3 valence electrons3 shells and 3 valence electrons2 shells and 2 valence electrons

Question

Toppr Admin · Accepted Answer

In the modern periodic table- horizontal columns are termed as groups and vertical rows are termed as periods-The period number indicates the number of the shells whereas the group number indicates the number of valence electrons-xA0-Hence- The element A has 3 shells and 2 valence electrons-

If an element $A$ belongs to Period $3$ and Group II then it will have :
$3$ shells and $2$ valence electrons
$2$ shells and $3$ valence electrons
$3$ shells and $3$ valence electrons
$2$ shells and $2$ valence electrons

In the modern periodic table, horizontal columns are termed as groups and vertical rows are termed as periods.The period number indicates the number of the shells whereas the group number indicates the number of valence electrons. Hence, The element A has 3 shells and 2 valence electrons.

If an element A belongs to Period 3 and Group II then it will have :3 shells and 2 valence electrons2 shells and 3 valence electrons3 shells and 3 valence electrons2 shells and 2 valence electrons

In the modern periodic table, horizontal columns are termed as groups and vertical rows are termed as periods.The period number indicates the number of the shells whereas the group number indicates the number of valence electrons. Hence, The element A has 3 shells and 2 valence electrons.

If an element $A$ belongs to Period $3$ and Group II then it will have :
$3$ shells and $2$ valence electrons
$2$ shells and $3$ valence electrons
$3$ shells and $3$ valence electrons
$2$ shells and $2$ valence electrons