The first four ionisation energy value of an element are 190, 580, 590 and 5960 kcal. The number of valence electrons in the element is :

Question

The first four ionisation energy value of an element are 190, 580, 590 and 5960 kcal. The number of valence electrons in the element is : (A) 1 (B) 2 (C) 3 (D) 4

Tardigrade Admin · Accepted Answer

As there is very high difference between IE 3 IE 4 thus it has three electrons in its valence shell.

Q. The first four ionisation energy value of an element are $190, 580, 590$ and $5960$ kcal. The number of valence electrons in the element is :

1

2

3

4

As there is very high difference between $I E_{3} & I E_{4}$ thus it has three electrons in its valence shell.

Q. The first four ionisation energy value of an element are 190,580,590 and 5960 kcal. The number of valence electrons in the element is :

1

2

3

4

As there is very high difference between IE3​&IE4​ thus it has three electrons in its valence shell.

Q. The first four ionisation energy value of an element are $190, 580, 590$ and $5960$ kcal. The number of valence electrons in the element is :

As there is very high difference between $I E_{3} & I E_{4}$ thus it has three electrons in its valence shell.