Question

element atomic number electronic configuration Valence Electroncs valency​

Answer 1

Answer:

1) Hydrogen - 1s, 1, 1

2) Carbon - 1s² 2s² 2p², 4, 4

2) Magnesium - 1s² 2s² 2p⁶ 3s², 2, 2

Answer 2

Answer:

1) Hydrogen - 1s, 1, 1

2) Carbon - 1s² 2s² 2p², 4, 4

2) Magnesium - 1s² 2s² 2p⁶ 3s², 2, 2