Q. In a copper atom, the first orbital contains:

A
One electron
B
eighteen electrons
C
two electrons
D
eight electrons
Solution:

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 6) electrons, the third shell can hold up to 18 (2 6 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

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