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Question
Moving left to right in the second period, the number of valence electrons _____.
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Solution
Moving left to right in the second period, the number of valence electrons increases from 1 to 8.
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RELATED QUESTIONS
Two elements ‘P’ and ‘Q’ belong to the same period of the modern periodic table and are in Group 1 and Group 2, respectively. Compare their following characteristics in tabular form:-
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(b) The sizes of their atoms
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(d) Their tendencies to lose electrons
(e) The formula of their oxides
(f) The formula of their chlorides
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Given alongside is a part of the periodic table. As we move vertically downward from Li to Fr:
| Li | Be |
| Na | |
| K | |
| Rb | |
| Cs | |
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Explain
Size of atom changes when it loses or gain electron
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