Write the ions present in
${\mathrm{A}\mathrm{l}\mathrm{B}\mathrm{r}}_3$

Important Questions on Atoms and Molecules

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 12

An element has a valency of $3$. Write the simplest formula for sulphide of the element.

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 13

Name the compound represented by the formula ${\mathrm{K}}_2{\mathrm{SO}}_4$.

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 14

The formula of carbonate of metal $\mathrm{M}$ is ${\mathrm{M}}_2{\mathrm{CO}}_3$. What is the formula for the phosphate of $\mathrm{M}$?

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 15

Name any two monovalent cations, divalent cations and trivalent cations. Also name any one compound each one of them make.

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 16

How are given mass, molar mass and the number of moles related to each other?

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 17

The symbols of some of the ions are given below
${\mathrm{N}\mathrm{a}}^{+},{\mathrm{M}\mathrm{g}}^{2+},{\mathrm{H}}^{+},{\mathrm{C}\mathrm{O}}_3^{2-},{\mathrm{C}\mathrm{I}}^{-},{\mathrm{S}}^{2-}$
Using this information, find out the formula of sodium carbonate.

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 17

The symbols of some of the ions are given below
${\mathrm{N}\mathrm{a}}^{+},{\mathrm{M}\mathrm{g}}^{2+},{\mathrm{H}}^{+},{\mathrm{C}\mathrm{O}}_3^{2-},{\mathrm{C}\mathrm{I}}^{-},{\mathrm{S}}^{2-}$
Using this information, find out the formula of magnesium chloride.

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 3 - Atoms and Molecules>CHAPTER EXERCISE>Q 17

The symbols of some of the ions are given below
${\mathrm{N}\mathrm{a}}^{+},\mathrm{}{\mathrm{M}\mathrm{g}}^{2+},\mathrm{}{\mathrm{H}}^{+},\mathrm{}{\mathrm{C}\mathrm{O}}_3^{2-},\mathrm{}{\mathrm{C}\mathrm{I}}^{-},\mathrm{}{\mathrm{S}}^{2-}$
Using this information, find out the formula of hydrogen sulphide.