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Question
The given table shows elements with the same number of electrons in its valence shell.
| Elements | A | B | C |
| m.p. | 63.0 | 180.0 | 97.0 |
Whether these elements belong to same group or period.
Solution
Yes, these elements belong to the same group but are not from the same period as these elements have the same number of electrons in their valence shell.
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