|
What is the valency of an element having atomic number 18? |
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|
(a) |
2 |
(b) |
8 |
(c) |
Zero |
(d) |
6 |
|
What is the valency of an element having atomic number 18? |
|||||||
|
(a) |
2 |
(b) |
8 |
(c) |
Zero |
(d) |
6 |