Answer : The correct option is, (D) electrically neutral
Explanation :
There are three subatomic particles which are protons, neutrons and electrons. Protons and neutrons are present in the center of the nucleus and electrons are located around the nucleus. The protons are positively charged, electrons are negatively charged and neutrons are neutral, they have no charge.
In an electrically neutral atom, the number of protons are equal to the number of electrons.
In a positively charged and negatively ions, the number of protons are not equal to the number of electrons.
In a radioactive stable atom, the number of protons are not equal to the number of electrons.
Hence, an equal number of protons and electrons in an atom typically results in an atom that is electrically neutral.
