Given below is a part of the periodic table. How does the valency vary, as we move vertically downward from Li to Fr. Give reason.
Given below is a part of the periodic table. How does the valency vary, as we move vertically downward from Li to Fr. Give reason.
| Li | Be |
| Na | |
| K | |
| Rb | |
| Cs | |
| Fr | Ra |
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Valency remains constant as we move downwards. Elements of the same group have the same number of valence electrons.
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