Given below are some compounds and the number of atoms of their constituent elements in each of their molecules- Write their molecular formulas- Number of atoms of Formula Compound constituent elements th O - 1a Potassium hydroxide K - 1- O - 1- H - 1b Hydrogen peroxide H - 2- O - 2c Iron chloride Fe - 1- Cl - 2d Ammonium chloride N - 1- H - 4- Cl - 1Ammoniume Copper sulphate Cu - 1- S - 1- O - 4f Magnesium oxide Mg - 1- O - 1

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Molecular Formula

Given below a...

Question

Given below are some compounds and the number of atoms of their constituent elements in each of their molecules. Write their molecular formulas.

Compound

Number of atoms of constituent elements

Formula

(a)

Potassium hydroxide

K:1, O:1, H:1

KOH

(b)

Hydrogen peroxide

H:2, O:2

(c)

Iron chloride

Fe:1, Cl:2

(d)

Ammonium chloride

N:1, H:4, Cl:1

(e)

Copper sulphate

Cu:1, S:1, O:4

(f)

Magnesium oxide

Mg:1, O:1

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K C l, H B r, M g {B r}_{2}, K_{2} O, N a H, C a {C l}_{2}, C {C l}_{4}, H I, H_{2} S, {N a}_{2} S, F e S, B a {C l}_{2}

Fill in the blanks.

(a) In a compound the ………… do not retain their properties.

(b) In a ………… properties of constituents are retained.

(d) The molecular formula for carbon dioxide is ………… .

(e) The compound sodium chloride is made from the combination of the elements ………… and ………… .

(f) In the compounds H₂O, NaOH, H₂O₂, ………… are the common elements.

N i C l_{2} . 6 H_{2} O

N i C l_{2} .6 H_{2} O

m o l^{- 1}

H

N

O

S

C l

C a

N i

C s_{2} O < R b_{2} O < K_{2} O < N a_{2} O < L i_{2} O

N a_{2} O_{2} < K_{2} O_{2} < R b_{2} O_{2} < C s_{2} O_{2}

L i H C O_{3} < N a H C O_{3} < K H C O_{3} < R b H C O_{3} < C s H C O_{3}

N a F < N a C I < N a B r < N a I

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	Compound	Number of atoms of constituent elements	Formula
(a)	Potassium hydroxide	K:1, O:1, H:1	KOH
(b)	Hydrogen peroxide	H:2, O:2
(c)	Iron chloride	Fe:1, Cl:2
(d)	Ammonium chloride	N:1, H:4, Cl:1
(e)	Copper sulphate	Cu:1, S:1, O:4
(f)	Magnesium oxide	Mg:1, O:1

	Compound	Number of atoms of constituent elements	Formula
(a)	Potassium hydroxide	K:1, O:1, H:1	KOH
(b)	Hydrogen peroxide	H:2, O:2	H₂O₂
(c)	Iron chloride	Fe:1, Cl:2	FeCl₂
(d)	Ammonium chloride	N:1, H:4, Cl:1	NH₄Cl
(e)	Copper sulphate	Cu:1, S:1, O:4	CuSO₄
(f)	Magnesium oxide	Mg:1, O:1	MgO