Which statement identifies the first shell around the nucleus?

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Study for the BU Dental Radiology Exam. Use flashcards, multiple choice questions with hints, and explanations to master the material. Get ready for your exam!

Multiple Choice

Which statement identifies the first shell around the nucleus?

Explanation:
The first shell around the nucleus is the K shell. In atomic structure, shells are arranged by increasing distance from the nucleus and are labeled in order as K, L, M, N, with K being the closest (n = 1). This innermost shell can hold up to two electrons. So identifying the first (innermost) shell as the K shell is correct, while L, M, and N refer to shells farther out.

The first shell around the nucleus is the K shell. In atomic structure, shells are arranged by increasing distance from the nucleus and are labeled in order as K, L, M, N, with K being the closest (n = 1). This innermost shell can hold up to two electrons. So identifying the first (innermost) shell as the K shell is correct, while L, M, and N refer to shells farther out.

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