In the following table, the positions of six elements A, B, C, D, E and F are given as they are in the Modern Periodic Table :
In the following table, the positions of six elements A, B, C, D, E and F are given as they are in the Modern Periodic Table :
| Group→
Period ↓ |
1 | 2 | 3-12 | 13 | 14 | 15 | 16 | 17 | 18 |
| 2 | A | B | C | D | |||||
| 3 | E | F |
On the basis of the above table, answer the following questions :
(i) Name the element which forms only covalent compounds.
(ii) Name the element which is a metal with valency three.
(iii) Name the element which is a non-metal with valency three.
(iv) Out of B and C, whose atomic radius is bigger and why ?
(v) Write the common name for the family to which the
elements D and F belong.
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(i) E
(ii) B
(iii) C
(iv) B, because atomic radius decreases from left to right due to the increase in the nuclear charge.
(v) Noble gases.
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