Question

in order for an atom to be neutral what has to be true? *
the atom has more protons than neutrons
the atom has more neutrons than protons
the atom has the same number of protons and neutrons
the atom has the same number of protons and electrons

Explanation:

An atom is neutral when its overall charge is zero. Protons have a positive charge (\(+1\)), electrons have a negative charge (\(-1\)), and neutrons are neutral (\(0\)). For the atom to be neutral, the number of positive charges (from protons) must equal the number of negative charges (from electrons). The number of neutrons does not affect the charge of the atom.

• Option 1: More protons than neutrons - neutrons don't affect charge, so this doesn't ensure neutrality.
• Option 2: More neutrons than protons - again, neutrons don't affect charge, so this is incorrect.
• Option 3: Same number of protons and neutrons - neutrons don't contribute to charge, so this is wrong.
• Option 4: Same number of protons and electrons - protons (\(+1\) each) and electrons (\(-1\) each). If their numbers are equal, \(+1\times n - 1\times n=0\) (where \(n\) is the number of protons/electrons), so the atom is neutral.

Answer:

The atom has the same number of protons and electrons.