# Chemical Bond worksheet

Chemical bond can be defined as the force of attraction between two atoms which holds atoms and ions together in a unit. Electrovalent bond is a chemical bond in which atom loses an electron to form a positive ion and the other atom gains the electron to form a negative ion.

Some of the questions related to Chemical bonding are listed below, with their answer.

Questions:

1.An bond is formed under which condition mainly?

(a)    donate $e^-$ to non-metal

(b)   Energy must be released during bond formation

(c)    Energy must be adsorbed during bond formation

(d)   Metal share $e^-$ with non-metals

2. Which is not a feature of an ionic compound:

(a)    Have  a definite geometry

(b)   Soluble in organic non-polar solvents

(c)    Have high B.P., M-P. values

(d)   All of these

3. Which is not correct here:

(a)    ionic  solids conducts electricity due to presence of free ion

(b)   Ionic bond is nun-directional

(c)    Ionic bond is also called kernel bond

(d)   Covalent bond is favored by un—equal sharing of electron

4. $NH_4Cl$ has which type of bond:

(a)     Ionic

(b)   Co-valent

(c)    Co-ordinate

(d)   All of these

5. Lettice energy depends upon:

(a)    $\alpha$ charge on ion

(b)   $\alpha \dfrac{1}{\text{size of ion}}$

(c)    $\alpha \dfrac{1}{\text{hydration energy}}$

(d)   All of these

6. Which has maximum lattice energy here:

(a)     NaCl

(b)   $AlCl_3$

(c)    $MgCl_2$

(d)   CsCl

7. An atom A has 3 valence electrons while atom B has 6 valence electrons the compound formed will be:

(a)    $A_2B_6$

(b)   $AB_2$

(c)    $A_2B_3$

(d)   $A_3B_2$

8. Which has both ionic and covalent bonds:

(a)    $H_2O_2$

(b)   NaCN

(c)    $CH_3Cl$

(d)   $C_2H_4Br_2$

9. Which is not true about inert pair effect:

(a)    Here $ns^2$ electrons become inert

(b)   it create variable valency

(c)    It is shown by p-block elements mainly

(d)   It decreases down the group

10. Which of the following will have Sugden linkage:

(a)    $PCl_5$

(b)   $SF_6$

(c)    $IF_7$

(d)   All of these

1.(b)       2. (c)      3. (d)      4. (d)     5. (d)

6. (b)      7. (c)      8. (b)      9. (d)     10. (d)

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