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Chemistry - 9 Chapter - 5
Chemical Bonding
Test - 9
1.
Transfer of electrons is the only way to lower the energy of atoms
a) False
b) True
2.
Two ways the atoms lower their energy are?
a) Two answers are correct.
b) Transfer and sharing electrons
c) Transfer and bonding electron
d) Transfer and releasing electron
3.
When an electron comes under the attraction of nucleus of another atom its energy is?
a) Lowered
b) Neutral
c) Increased
4.
Force of repulsion between two atoms or molecules decreases the energy of electron?
a) True
b) False
5.
Force of attraction between two atoms or molecules ______ the energy of electron?
a) Decreases
b) Increases
6.
What is effect on force of attraction/repulsion and energy of electrons when a bond is formed?
.
a) 4. energy of electron is maximum
b) 3.forces of attraction and repulsion are equal
c) 1. energy of electrons is minimum
d) 2. answers 1 and 3 are correct
7.
A stable molecule is formed when forces of attraction and repulsion between atoms are equal
True False
a) True
b) False
8.
When two atoms share electrons a covalent bond is formed?
True False
a) False
b) True
9.
A covalent bond is formed by mutual sharing of an electron Pair. True False
a) False
b) True
10.
When sharing of "an electron pair" forms a bond, it is called?
,
a) A covalent bond
b) An ionic bond
c) A single covalent bond
d) A chemical compound
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