Question

What are the symbols for the elements with the valence electron configuration: (a) `s^2d^1`, (b) `s^2p^3` and (c) `s^2p^6`?

Answer 1

Here's what I get.

Explanation:

You can readily compare the following with the ones you see from http://ptable.com/ (by clicking the "Orbitals" tab):

(a) Valence electron configuration `"s"^2"d"^1`

• `"Sc": "4s"^2"3d"^1`
• `"Y":color(white)(l) "5s"^2"4d"^1`
• `"La": "6s"^2"5d"^1`
• `"Ce": "6s"^2"4f"^1"5d"^1`
• `"Gd": "6s"^2"4f"^7"5d"^1`
• `"Lu": "6s"^2"4f"^14"5d"^1`
• `"Ac": "7s"^2"6d"^1`
• `"Pa": "7s"^2"5f"^2"6d"^1`
• `"U": color(white)(l)"7s"^2"5f"^3"6d"^1`
• `"Np": "7s"^2"5f"^4"6d"^1`
• `"Cm": "7s"^2"5f"^7"6d"^1`

(b) Valence electron configuration `"s"^2"p"^3`

The pnictogens:

• `"N"color(white)(l): "2s"^2"2p"^3`
• `"P"color(white)(l): "3s"^2"3p"^3`
• `"As": "4s"^2"3d"^10"4p"^3`
• `"Sb": "5s"^2"4d"^10"5p"^3`
• `"Bi": "6s"^2"4f"^14"5d"^10"6p"^3`
• `"Mc": "7s"^2"5f"^14"6d"^10"7p"^3`

(c) Valence electron configuration `"s"^2"p"^6`

The noble gases:

• `"Ne": "2s"^2"2p"^6`
• `"Ar": "3s"^2"3p"^6`
• `"Kr": "4s"^2"3d"^10"4p"^6`
• `"Xe": "5s"^2"4d"^10"5p"^6`
• `"Rn": "6s"^2"4f"^14"5d"^10"6p"^6`
• `"Og": "7s"^2"5f"^14"6d"^10"7p"^6`