The element with atomic number 66 is likely to have the same outer shell configuration as the element with atomic number.

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The element with atomic number 66 is likely to have the same outer shell configuration as the element with atomic number.

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answer is A.

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Detailed Solution

Electronic configuration of atomic number 66 is - 2, 8, 18, 28,8, 2. Its outer shell possessed two electrons. So, atomic number 12 (2,8,2) also contains 2 electrons in its outer shell.

The correct option is A.

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