Question

Which of the following pairs has
elements containing same number of
electrons in the outermost orbit?
(A) NO
(B) Na, CI
(C) Ca, C
(D) CI, Br​

Answer 1

Answer:

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Answer 2

Answer:

Elements with the same number of electrons in their outermost shell show similar chemical properties. Example 1: Fluorine, chlorine, bromine, and iodine each have 7 electrons in their outermost shell. These so-called halogens are also quite similar in their chemical behavior.