Question

Nitrogen Calcium Argon iron Gallium Phosphorus :- there electron notation​ : a) Nitrogen: 1s² 2s² 2p³

b) Calcium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
c) Argon: 1s² 2s² 2p⁶ 3s² 3p⁶
d) Iron: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
e) Gallium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹
f) Phosphorus: 1s² 2s² 2p⁶ 3s² 3p³

Answer 1

The electron notation for the given elements are as follows: Nitrogen: 1s² 2s² 2p³; Calcium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²; Argon: 1s² 2s² 2p⁶ 3s² 3p⁶; Iron: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶; Gallium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹; Phosphorus: 1s² 2s² 2p⁶ 3s² 3p³.

Step-by-step explanation:

Nitrogen (atomic number 7) has the electron configuration 1s² 2s² 2p³.

Calcium (atomic number 20) has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².

Argon (atomic number 18) has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶.

Iron (atomic number 26) has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.

Gallium (atomic number 31) has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹.

Phosphorus (atomic number 15) has the electron configuration 1s² 2s² 2p⁶ 3s² 3p³.