Ions and Radicals

Q.

Select the basic and acidic radicals in the following compounds.

(a) $MgS{O}_4$ (b) $(N{H}_4{)}_{2}S{O}_4$

(c) $A{l}_2(S{O}_4{)}_3$ (d) $ZnC{O}_3$

(e) $Mg(OH{)}_2$

Q.

What do you understand by the following terms?

(a) Acid radical (b) Basic radical

Q.

A positively charged ion is called a _______________.

Q.

The number of atoms present in one molecule of an element is called as:

1. Atomicity

2. Empirical formula

3. Molecule

4. Compound

Q.

The molecular formula of ammonium sulphate is

1. ${\left({\mathrm{NH}}_4\right)}_2{\mathrm{SO}}_4$

2. ${\mathrm{NH}}_2{\mathrm{SO}}_4$

3. ${\mathrm{NH}}_4{\mathrm{SO}}_4$

4. None of these

Q.

The positively and negatively charged ions are called as _____ and _____ respectively.

1. Radical and Cation.

2. Cation and Anion.

3. Anion and Radical.

4. Anion and Cation.

Q. In the compound sodium chloride:

1. $N{a}^{+}2$ is a cation and $C{l}^{-}2$ is an anion.
2. $N{a}^{+}$ is an anion and $C{l}^{-}$ is a cation.
3. $N{a}^{+}$ is a cation and $C{l}^{-}$ is an anion.
4. NaCl is not ionic but a covalent compound.

Q.

30. An example of acid radical

Q. Write the cations and anions present in the compound $NaCl$.

Q. Is the atomic number of O2 and 03 are same

Q. In an uncharged atom, the number of protons is always the number of electrons.

1. greater than
2. lower than
3. equal to

Q.

How are anions formed?

Q.

What is a monoatomic ion?

Q.

Write the chemical name of the following compound.

$\mathrm{FeS}$

Q.

Explain mono atomic, di atomic and tri atomic molecules. [3 MARKS]

Q.

Chlorine has 7 electrons in its outermost orbit, so the ion that it forms to get stable is ___ charged.

Q. Write three differences between anions and cations.

Q.

$({NH}_4{)}^{+}$, $({SO}_4{)}^{2-}$ are examples of _________________.

1. Polyatomic Ions

2. Ions

3. Compound

4. Both ions and polyatomic ions.

Q. Question 3
The chemical symbol for nitrogen gas is
(a) Ni
(b) $N_2$
(c) $N^{+}$
(d) N

Q. Hydrogen chloride is a/an ____ made up of ${\text{H}}^{+}$ and ${\text{Cl}}^{-}$ which are ____ and _____ respectively.

1. Molecule, Cation and Anion.

2. Ion, Cation and Anion.

3. Element, Molecule and Molecule.

4. Molecule, Anion And Cation.

Q. Which one of the following ions has same number of unpaired electrons as that of v3+ ions A)cr3+ B)mn2+ C)ni2+ D)fe3+

Q. The chemical symbol for nitrogen gas is:

1. Ni
2. $N_2$
3. $N^{+}$
4. (d) N

Q.

The number of atoms present in one molecule of an element is called as:

1. Compound

2. Molecule

3. Atomicity

4. Empirical formula

Q.

Which of the following statement is not correct about anions?

1. Sodium forms negatively charged ion.

2. A negatively charged ion is called anion

3. Anions contain more electrons than a normal atom.

4. Chlorine forms Cl^- ion.

Q. write the basic and acidic radicals of the following and then write the chemical formulae of the compound.
Stannic oxide

Q.

Define ions.

Q. Anion & Cation

Q. Write the basic and acidic radicals of the following and then write the chemical formulae of the compound.
Chromium sulphate

Q.

Complete the following table.

$\begin{array}{ccccccc}AcidRadicals\to & Chloride& Nitrate& Sulphate& Carbonate& Hydroxide& Phosphate\\ BasicRadicals\downarrow & & & & & & \\ Magnesium& MgC{l}_2& Mg(N{O}_3{)}_2& MgS{O}_4& MgC{O}_3& Mg(OH{)}_2& M{g}_3(P{O}_4{)}_2\\ Sodium& & & & & & \\ Zinc& & & & & & \\ Silver& & & & & & \\ Ammonium& & & & & & \\ Calcium& & & & & & \\ Iron\left(II\right)& & & & & & \\ Potassium& & & & & & \end{array}$

Q. What is atomicity? Explain with example.