The Question : The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2,6 |
| Q | 2,8,1 |
| R | 2,8,7 |
| S | 2,8,8 |
a. Identify which element(s) will form covalent bonds with carbon.
b. “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
Solution for the question :
(a) P and R
(b) Carbon has a valency four or Tetravalency & Catenation
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