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    				| 1. | An atom with 3 protons & 4 neutrons wil have a valency of | 
| Answer» ong>please MARK me as the brainliest Explanation: Lithium element Answer. If an ATOM CONTAINS 3 protons and 4 NEUTRONS then atom will be of Lithium element. The outermost orbit of Lithium has 1 Electron so it's valency COULD be +1 or -1. | |