Octet Rule

Q. ________ needs three electrons to attain the nearest noble gas configuration.

1. Silicon
2. Helium
3. Oxygen
4. Nitrogen

Q.

According to octet rule, atoms tends to acheive _____ electrons in the outermost shell.

1. six
2. four
3. eight
4. one

Q. Kossel proposed that the Lewis structure could be taken further to form structures for molecules and complicated compounds as well.

1. True
2. False

Q.

In order to attain octet configuration, the atoms share, lose or gain electrons. In the process, its atomic mass:

1. Changes according to number of electrons being gained

2. Remains the same in case of sharing, but it changes in case of losing or gaining electrons

3. Does not change

4. Increases

Q.

Given image is of a :

1. Carbon tetrachloride molecule

2. Methane molecule

3. None of the above

4. Ammonia molecule

Q.

A chemical bond between two combining atoms can be formed by

1. Transfer of electrons

2. Sharing of electrons

Q.

Assertion (A) Sodium chloride formed by the action of chlorine gas on sodium metal is a stable compound.

Reason (R) This is because sodium and chloride ions acquire octet in sodium chloride formation.

Choose the correct option.

1. A and R both are correct and R is the correct explanation of A

2. A and R both are correct, and R is not the correct explanation of A

3. A is true, but R is false

4. A and R both are false

Q.

In a stable molecule, the force that holds two or more atoms together is known as :

1. valency

2. octet

3. chemical bond

4. duplet

Q.

Which of the following are correct about - He, Ne etc?

1. They are group 3 elements.

2. They are very stable elements.

3. They do not form bonds with their own species.

4. They are noble gases.

Q.

$LiCl$ and $BC{l}_3$ are examples of ___.

1. duplets
2. Incomplete Octet
3. Half-filled Octet
4. Complete Octet