Question

name of 30 elements with atomic no. and velency

Answer 1

Hydrogen-H

Helium-He

Lithium -Li

Beryllium Be

Boron B

Carbon C

Nitrogen N

Oxygen O

Fluorine F

Neon Ne

Sodium Na

Magnesium Mg

Aluminium Al

Silicon Si

Phosphorous P

Sulphur S

Chlorine Cl

Argon Ar

Potassium K

Calcium Ca

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Answer 2

Hydrogen atomic number 1 ,valency is +1;-1

Helium atomic number 2 valency 0

Lithium atomic number 3 valency 1

Beryllium atomic number 4 valency 2

Borno valency 3

Carbon valency 4

Nitrogen valency 3

Oxygen valency 2

Fluorine valency 1

Neon 0

Sodium valency +1

Magnesium valency +2

Aluminium valency +3

Silicon valency+ 2

Phosphorous valency +3

Sulphur valency +2

Chlorine valency -1

Argon valency 0

Potassium valency +1

Calcium valency +2

Scandium valency

Titanium

Vanadium

Chromium

Manganese valency+2

Neon valency 0

Coblat valency +2

Nickle valency

Copper valency +2

Zinc valency +2