The electrical force between an inner electron and the nucleus of an atom is larger for atoms of
A)low atomic number.
B)high atomic number.
C)the same for both

Question

Quizplus · Accepted Answer

The electrical force between an electron and the nucleus is directly proportional to the charge on the nucleus and inversely proportional to the distance between the electron and the nucleus. As the atomic number increases, the number of protons (and hence the nuclear charge) increases, and if the size of the atom remains constant, the distance between the nucleus and the electron decreases. Therefore, the electrical force between the inner electron and the nucleus increases with increasing atomic number.

The Electrical Force Between an Inner Electron and the Nucleus