Question
Conventional system of Animal classification.
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Answer the questions based on Modern Periodic table.
Use your brain power;
Question
(i) By referring to the Modern Periodic table find out the period to which the above elements belong?
(ii) Arrange the above elements in a decreasing order of their atomic radii.
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| Element | O | B | C | N | Be | Li |
| Atomic radius(pm) | 66 | 88 | 77 | 74 | 111 | 152 |
(i) By referring to the Modern Periodic table find out the period to which the above elements belong?
(ii) Arrange the above elements in a decreasing order of their atomic radii.
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(v) What is the periodic trend observed in the variation of atomic radius while going from left to right within a period?
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