All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 17

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Modern atomic symbols are based on the method proposed by

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Important Questions on The Language of Chemistry

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 18

The symbol for carbonate ion is

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 19

Valency of copper in

{Cu}_{2} {Cl}_{2}

and

{CuCl}_{2}

are respectively

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 20

The valency of iron in

{Fe}_{2} O_{3}

is

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 21

The formula of compound represents

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 22

The correct chemical formula of aluminum oxide is

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 23

The chemical reaction,

${({NH}_{4})}_{2} {Cr}_{2} O_{7} \overset{∆}{\to} N_{2} + 4 H_{2} O + {Cr}_{2} O_{3}$ is an example of

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 27

The chemical symbol of sodium is

Na

. Write its Latin name.

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All In One ICSE Chemistry>Chapter 1 - The Language of Chemistry>EXAM PRACTICE>Q 28

If the symbol for cobalt (

Co

) were written as

CO

, what would be incorrect with it?