Chemistry 9 Chapter 4 - Structure of Molecules -2

Chemistry 9 Chapter 4 - Structure of Molecules -2

1. The tendency of some atoms to acquire two electron configuration in their valence shell, when bonding is known as?

a) Triplet rule
b) Periodic law
c) Octate rule
d) Duplet rule

2. Carbon belongs to Group IVA, how many electrons would be present in its valence shell?

a) 4
b) 2
c) 8
d) 5

3. The force of attraction that holds atoms togather in a substance is known as?

a) Shielding effect
b) Electronegativity
c) Ionization energy
d) Chemical bond

4. Megnesium belongs to Group IIA, how many electrons would be
present in the valence shell?

a) 4
b) 6
c) 2
d) 8

5. Phosphorus has five electrons in the valence shell. It belongs to group?

a) IIA
b) IVA
c) VA
d) IIIA

6. When an atom loses an electron, it forms?

a) Cation
b) Both of these
c) Anion
d) None of these

7. When an atom gains an electron, it forms?

a) Both of these
b) None of these
c) Cation
d) Anion

8. Na+ means that?

a) It has lost two electrons
b) It has lost an electron
c) It has gained two electrons
d) It has gained an electron

9. Oxygen has six electrons in its valence shell. How many electrons are needed to achieve noble gas configuration?

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

10. Fluorine has seven electrons in its valence shell. How many
electrons are needed to complete octet?

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

This is more feedback!

This is the feedback!