# Structure of Atom

## Electronic Configuration

From Nitrogen (N) to Magnesium (Mg)

Electronic configuration of Nitrogen

Atomic number of nitrogen = 7.

Therefore number of electrons = 7

Thus, electronic configuration of nitrogen is

Number of orbit in nitrogen = 2

### Electronic configuration of Oxygen

Atomic number of oxygen = 8.

Therefore number of electrons = 8.

Thus, electronic configuration of oxygen is

Number of orbit in oxgyen = 2

### Electronic configuration of Fluorine

Atomic number of fluorine = 9

Therefore number of electrons = 9

Thus, electronic configuration of fluorine is

Number of orbit in fluorine = 2

### Electronic configuration of Neon

Atomic number of neon = 10

Therefore number of electrons = 10

Thus, electronic configuration of neon is

Number of orbit in Neon = 2

### Electronic configuration of Sodium

Atomic number of sodium = 11

Therefore number of electrons = 11

Since, in ^{2nd} orbit the maximum number of electrons is equal to 8 and there are 11 electrons in sodium atom, thus the eleventh electron will go in third orbit.

Thus, electronic configuration of sodium is

Number of orbit in sodium = 3

Electronic configuration of Magnesium

### Atomic number of magnesium = 12

Therefore number of electrons = 12

Thus, electronic configuration of magnesium is

Number of orbit in magnesium = 3.