Chemistry 9 Chapter 4 - Structure of Molecules -4

Chemistry 9 Chapter 4 - Structure of Molecules -4

1. The bond formed by the mutual sharing of electrons between two
atoms is known as?

a) Covalent bond
b) Ionic bond
c) Hydrogen bond
d) None of these

2. How many valence electrons oxygen have?

a) 1
b) 4
c) 2
d) 3

3. Two hydrogen atoms share thier valence electrons to form a ___ molecule?

a) Tetra atomic
b) Triatomic
c) Penta atomic
d) Diatomic

4. When two hydrogen atoms form a covalent bond, the resulting
molecule achieve the electronic configuration of?

a) Ne
b) Kr
c) He
d) Ar

5. Which one of the following is Not an ionic compound?

a) MgO
b) NaF
c) NaCl
d) HCl

6. How many electron pairs are shared by two Fluorine atoms to form a
covalent bond?

a) Two
b) Three
c) Four
d) One

7. Pairs of valence electrons which are not shared between atoms are known as?

a) Unshared pair
b) Both of these
c) None of these
d) Lone pair

8. Covalent bond that is formed by the sharing of one electron pair
is known as?

a) Triple covalent bond
b) Double covalent bond
c) Tetra covalent bond
d) Single covalent bond

9. Double covalent bonds are formed by the sharing of ___ electron pairs?

a) Two
b) Three
c) Four
d) Five

10. H₂ molecule contains a ___ covalent bond?

a) Double
b) Tetra
c) triple
d) Single

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