|
The atomic number of an element X is 19. The number of electrons in its on X+ will be |
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|
(a) |
18 |
(b) |
19 |
(c) |
20 |
(d) |
21 |
|
The atomic number of an element X is 19. The number of electrons in its on X+ will be |
|||||||
|
(a) |
18 |
(b) |
19 |
(c) |
20 |
(d) |
21 |