|
How many elements are there in non-metal? |
|||||||
|
(a) |
14 |
(b) |
18 |
(c) |
88 |
(d) |
114 |
|
How many elements are there in non-metal? |
|||||||
|
(a) |
14 |
(b) |
18 |
(c) |
88 |
(d) |
114 |