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6 March, 17:49

Elements in the halogen group are

a. very reactive

b. have seven electrons in the outer shell

c. react to form salts

d. all of the above

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Answers (1)
  1. 6 March, 17:55
    0
    All of the above. Halogens are extremely reactive. Their valency is - 1 as they have 7 outer shell electrins and need 1 more to make it 8. They also react with metals to form salt. So the ans is (D)
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