wiz-icon
MyQuestionIcon
MyQuestionIcon
448
You visited us 448 times! Enjoying our articles? Unlock Full Access!
Question

The following table represents the first 20 elements of the Periodic table (the symbol and the electronic configuration for the outermost shell for each of the 20 elements are given).

IA 0

H

1

IIAIIIAIVAVAVIAVIIA

He

2

Li

2,1

Be

2,2

B

2, 3

C

2,4

N

2,5

O

2,6

F

2,7

Ne

2,8

Na

2,8,1

Mg

2,8, 2

Al

2,8,3

Si

2,8,4

P

2,8,5

S

2,8,6

Cl

2,8,7

Ar

2,8,8

K

2,8,8, 1

Ca

2,8, 8, 2

Nitrogen has _____ electrons in its outermost shell.


Open in App
Solution

  • Valence electrons of an element are defined as the number of electrons present in the outermost shell of that element.
  • Valence electrons in any element in Group 1, 2, and 13 to 18 can be predicted by its Group number. Example, elements in Group 1 or Group IA have 1 valence electron.
  • According to the electronic configuration of Nitrogen (2, 5), the electron present in its outermost or valence shell (second shell) is 5.
  • Thus, Nitrogen (N) has 5 electrons in its outermost shell.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Force on a Current Carrying Conductor in a Magnetic Field
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon