Question

[25/04, 12:07 PM] +91 99626 72137: 2) Write s, p, d, f electronic configuration for the following and determine its Valency: boron, carbon, neon, potassium, calcium, copper, sodium, sulphur
[25/04, 12:07 PM] +91 99626 72137: CHEMISTRY ASSIGNMENT: 1)Write the chemical formula for the following using criss-cross method: aluminium sulphate, sodium oxide, potassium carbonate, zinc sulphide, silver chloride, magnesium sulphide, calcium hydride, lithium nitride, barium chloride, copper nitrate

Answer 1

Answer:

Boron: ¹¹₅B

Configuration: 1s² 2s² 2p¹

Valency: "+3" or "–5"

Carbon: ¹²₆C

Configuration: 1s² 2s² 2p²

Valency: "±4"

Neon: ²⁰₁₀Ne

Configuration: 1s² 2s² 2p⁶

Valency: 0

Potassium: ³⁹₁₉K

Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

Valency: +1

Calcium: ⁴⁰₂₀Ca

Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Valency: +2

Copper: ⁶³₂₉Cu

Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰

Valency: +1 or +2

Sodium: ²³₁₁Na

Configuration: 1s² 2s² 2p⁶ 3s¹

Valency: +1

Sulphur: ³²₁₆S

Configuration: 1s² 2s² 2p⁶ 3s² 3p⁴

Valency: –2

Aluminium Sulphate: Al₂(SO₄)₃

Sodium Oxide: Na₂O

Potassium Carbonate: K₂CO₃

Zinc Sulphide: ZnS

Silver Chloride: AgCl

Magnesium sulphide: MgS

Calcium Hydride: CaH₂

Lithium Nitride: Li₃N

Barium Chloride: BaCl₂

Copper Nitrate: Cu(NO₃)₂