Radicals

Q. What is the chemical formula for sodium chloride?

1. 
2. 
3. 
4. 

Q.

What do you understand by the term acid radical?

Q.

Define :

(a) Radical (b) Valency

(c) Molecular formula.

Q.

Give two examples of compound radical.

Q.

Stannic ion takes up _____ electron(s) to convert to stannous ion.

Q.

Give two examples of trivalent metal ions.

Q. Names and symbols of the constituent element and identify their valencies from the molecular formula.

1.KCl
2.HBr
3.MgBr2
4.K2O
5.NaH
6.CaCl2
7.CCl4
8.HI
9.H2S
10.NA2S
11.FeS
12.BaCl2

Q.

What is a radical? Give examples.

Q.

Chemical formula of a molecular compound is determined on the basis of:

1. Charge

2. Valency

3. Mass

4. Atomic number

Q.

The radical which is made-up of more than one kind of atoms is called _____ radicals.

Q.

Differentiate between acid radical and basic radical.

Q.

Name any two colorless metals ions.

Q. What is the representation of atom of hydrogen and a molecule of hydrogen?

1. $H_2$ and $H$
2. $H_2$ and $H_2$
3. $H$ and $H_2$
4. $H$ and $H$

Q.

ClO3 what is the chemical name of the chemical and its valency ?

Q.

Differentiate between acid radical and basic radical.

Q. The positively and negatively charged ions are respectively called ___ and ___.

1. radical, cation

2. anion, cation

3. cation, anion

4. anion, radical

Q. Which of the following are the examples of acidic radicals?

1. $B{r}^{-}$
2. ${\mathrm{Cl}}^{-}$
3. ${\mathrm{Cu}}^{2+}$
4. $N{a}^{+}$

Q.

Write the symbol and valency for the following radical:

Bismuth

Q. If the valencies of aluminium and hydroxide ion are $+3$ and $-1$ respectively, what is the correct chemical formula for aluminium hydroxide?

1. $(Al{)}_{3}OH$
2. $AlO{H}_3$
3. $Al(OH{)}_3$
4. $Al{O}_3{H}_3$

Q.

Hydrogen chloride is a ___ made of H⁺ and Cl^- which are ___ and ___ respectively.

1. Compound, Cation and Anion.

2. Ion, Cation and Anion.

3. Element, Molecule and Molecule.

4. Compound, Anion And Cation.