Ionic Compounds

Q.

Is potassium a metal or nonmetal?

Q.

Question 48
Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements.
(a) $\text{Mg}\text{and}{\text{N}}_2$
(b) $\text{Li}\text{and}{\text{O}}_2$
(c) $\text{Al}\text{and}{\text{Cl}}_2$
(d) $\text{K}\text{and}{\text{O}}_2$

Q.

Why covalent bonds are not stronger than Ionic bonds?

Q.

Are all ionic bonds salts?

Q.

What are the three types of ionic compounds?

Q.

An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to combine with chlorine and sulphur separately.

Q.

Who proposed the concept of ionic bonding?

Q.

What type of compounds are usually formed between metals and non-metals and why ?

Q.

What are the rules to write the chemical formulas? Give examples

Q. Which of the following represents a correct chemical formula? Name it

$\left(a\right)$ $CaCl$
$\left(b\right)$ $MgS{O}_4$
$\left(c\right)$ $NaS{O}_4$
$\left(d\right)$ $NaS$

Q. Which of the following substances give ${\text{H}}^{+}$ ions in aqueous solution?

1. ${\text{H}}_2{\text{CO}}_3$
2. ${\text{C}}_2{\text{H}}_5\text{OH}$
3. ${\text{CH}}_3\text{COOH}$
4. ${\text{H}}_3{\text{PO}}_4$

Q. Formation of NaCl involves:

1. loss of protons
2. sharing of electrons
3. loss of electrons
4. gain of electrons

Q.

Which of the following represents the chemical formula of Calcium Carbonate?

1. $Ca{CO}_3$​.

2. ${Ca}_2{CO}_3$​.

3. $Ca({CO}_3{)}_2$​.

4. ${Ca}_{3}C{O}_2$​.

Q. Which of the following represents a correct chemical formula? Name it

$\left(a\right)$ $CaCl$
$\left(b\right)$ $MgS{O}_4$
$\left(c\right)$ $NaS{O}_4$
$\left(d\right)$ $NaS$

Q.

Which type of compound is $Mg{Cl}_2$?

1. Ionic compound

2. Electrovalent compound

3. Covalent compound

4. Both Ionic and covalent compound.

Q. Which is the most electropositive substance among the following?

1. Metals
2. Both metals and metalloids
3. Non-metals
4. Metalloids

Q. Ionic compounds are said to have:

1. high melting and boiling points.
2. high melting point and low boiling point.
3. low melting point and high boiling point.
4. low melting and boiling points.

Q. Which of the following represents a correct chemical formula? Name it

$\left(a\right)$ $CaCl$
$\left(b\right)$ $MgS{O}_4$
$\left(c\right)$ $NaS{O}_4$
$\left(d\right)$ $NaS$

Q.

When does an ionic bond is formed?

Q. The outermost shell of a representative element contains $x$ electrons and penultimate shell contains $y$ electrons. The number of valence electrons could be:

1. $x+y$
2. $x$
3. $y-x$
4. $y$

Q. Which of the following substances give ${\text{H}}^{+}$ ions in aqueous solution?

1. ${\text{H}}_3{\text{PO}}_4$
2. ${\text{CH}}_3\text{COOH}$
3. ${\text{H}}_2{\text{CO}}_3$
4. ${\text{C}}_2{\text{H}}_5\text{OH}$

Q. Define valency.

Q. Among I-A elements which can form ionic as well as covalent bonds?

1. Hydrogen
2. Helium
3. Cerium
4. Sodium

Q.

An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to combine with chlorine and sulphur separately.

Q. Define valency.

Q.

The difference between ions and atoms in of -

1. relative size

2. configuration

3. presence of charge

4. mass of nucleus

Q.

Which metal combines with chlorine to make table salt?

1. Scandium

2. Silicon

3. Sulfur

4. Sodium

Q. What is the chemical formula of sodium carbonate? [2 marks]

Q. The number of electrons in the valence orbit of nitrogen in an ammonia molecule is:

1. 8
2. 5
3. 7
4. 6

Q.

The number of valence electrons of Barium is

1. 6

2. 1

3. 2

4. 3