Chemistry
State the correct answer.
(i) The number of electrons in the valence [outermost] shell of a halogen is :
- 1
- 3
- 5
- 7
(ii) Electro negativity across the period - increases/decreases.
(iii) Non metallic character down the group - increases/decreases.
Periodic Table
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Answer
(i) The number of electrons in the valence shell of halogen is 7.
(ii) Electro negativity across a period - increases.
(iii) Non metallic character down the group - decreases.
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