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Question
The number of electrons present in the outer most shell of the halogens are:
The number of electrons present in the outer most shell of the halogens are:
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Solution
The correct option is C 7
Halogens have seven electrons in its valence shell. They lie in the 17th group before inert gas. For e.g atomic number of fluorine is 9. It's electronic configuration is 2, 7. Atomic number of chlorine is 17. The electronic configuration is 2, 8, 7.
Halogens have seven electrons in its valence shell. They lie in the 17th group before inert gas. For e.g atomic number of fluorine is 9. It's electronic configuration is 2, 7. Atomic number of chlorine is 17. The electronic configuration is 2, 8, 7.
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