The first-four ionisation energy values of an element are 191 , 578 , 872 and 5962 kcal . The number of valence electrons in the element is

Question

The first-four ionisation energy values of an element are 191 , 578 , 872 and 5962 kcal . The number of valence electrons in the element is (A)  1  (B)  2  (C)  3  (D)  4

Tardigrade Admin · Accepted Answer

The number of valence electrons in the element is three since the IV th IE is very high i.e., the fourth electron is to be removed from stable configuration.

Q. The first-four ionisation energy values of an element are $191$ , $578$ , $872$ and $5962 k c a l$ . The number of valence electrons in the element is

$1$

$2$

$3$

$4$

The number of valence electrons in the element is three since the IV th IE is very high i.e., the fourth electron is to be removed from stable configuration.

Q. The first-four ionisation energy values of an element are 191 , 578 , 872 and 5962kcal . The number of valence electrons in the element is

1

2

3

4

The number of valence electrons in the element is three since the IV th IE is very high i.e., the fourth electron is to be removed from stable configuration.

Q. The first-four ionisation energy values of an element are $191$ , $578$ , $872$ and $5962 k c a l$ . The number of valence electrons in the element is

$1$

$2$

$3$

$4$