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Question
Which of the following elements has twice as many electrons in its second shell as it has in its first shell?
Which of the following elements has twice as many electrons in its second shell as it has in its first shell?
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Solution
The correct option is A Carbon
K-shell of an atom can accommodate maximum of two electrons. According to the question, the L-shell of the element must have twice as many electrons it has in its K-shell, which means L-shell must have four electrons.
Therefore, the atomic number of this element must be six.
Here, carbon is the element which has atomic number six.
K-shell of an atom can accommodate maximum of two electrons. According to the question, the L-shell of the element must have twice as many electrons it has in its K-shell, which means L-shell must have four electrons.
Therefore, the atomic number of this element must be six.
Here, carbon is the element which has atomic number six.
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