The nucleus can be positively or negatively charged depending on the identity of the atom.

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The statement presented asks whether the nucleus can be positively or negatively charged depending on the identity of the atom.
Option 1 (True): This is misleading because the nucleus contains protons (positive charge) and neutrons (neutral). The overall charge of the nucleus is always positive, equal to the number of protons (the atomic number Z). The identity of the atom determines Z, not a possible negative nuclear charge. Therefore, describing the nucleus as sometimes negatively charged is incorrect.
Option 2 (False): This correctly reflects the physical fact that the nucleus has a positive charge due to its protons. Since neutrons carry no charge and electrons orbiting around the nucleus do not reside in the nucleus themselves, there is no mechanism by which the nucleus becomes negatively charged. Consequently, the nucleus cannot be negatively charged, and its charge is inherently positive for all atoms.

The nucleus can be positively or negatively charged depending on the identity of the atom.

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