Chemistry, asked by subhroneel, 1 year ago

find the valency of oxygen, silicon, bicarbonate, magnesium, hydrogen and Carbondale....also find its atomic mass....

Answers

Answered by Anonymous

Valencies of

Oxygen - 2
Bicarbonate= 1
Magnesium = 2
Hydrogen = 1
Carbonate 2

Atomic masses

Hydrogen = 1
Bicarbonate = 62
Magnesium = 24
Oxygen = 16
Carbonate= 60

Hope it helps..

abhi178: bicarbonate HCO3 - then i think molar mass =61 g/mol

subhroneel: hmm

Anonymous: but 1 negatuce charge is there

Anonymous: - ve

abhi178: negative charge means electrons but electrons mass is comparatively small then proton or neutrons so neglect

Answered by AbhilashaM

For finding valency, write the electronic configuration of the atom, then subtract the no. of atoms present in the last shell from 8. (For, Hydrogen subtract form 2)

Valencies:-
Oxygen : 2
Silicon : 4
Bicarbonate : 3
Magnesium : 2
Carbonate : 2

Atomic Mass:-
Oxygen : 16
Silicon : 28
Bicarbonate : It have molar mass. 61.02g/mol
Magnesium : 2
Carbonate : It also have molar mass. 60.01g/mol

Hope it helps!

AbhilashaM: I forgot to mention hydrogen. It has valency, 1 and atomic mass 1

subhroneel: hmm

AbhilashaM: Also magnesium has atomic mass 24 not 2. Sorry

subhroneel: kkkk

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