1. | In a group, atomic radii increase due to successive increase of |
a. | electronic shells |
b. | proton shells |
c. | neutron shells |
d. | nucleus |
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Answer: (a).electronic shells
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2. | Distance at which attractive forces of hydrogen overcome repulsive forces is |
a. | 75.2pm |
b. | 75.3pm |
c. | 75.5pm |
d. | 75.4pm |
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Answer: (d).75.4pm
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3. | Unit of electro negativity is |
a. | one |
b. | two |
c. | none |
d. | three |
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Answer: (c).none
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4. | Ionization energies is influenced by nature of |
a. | orbital |
b. | nuclear |
c. | atom |
d. | electron |
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Answer: (a).orbital
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5. | First ionization energy of carbon is |
a. | 1084 |
b. | 1085 |
c. | 1086 |
d. | 1087 |
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Answer: (c).1086
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