Choose the INCORRECT statement. A)Within a given subshell,each orbital is usually occupied by a single electron before any orbital has two electrons. B)When a metallic element unites with a nonmetallic element,electrons are lost by atoms of the metal and gained by atoms of the nonmetals. C)The noble gas atoms complete the filling of the p orbitals. D)The ionization energy of Ca⁺ is greater than that for Ca²⁺. E)The radius of Ba²⁺ is smaller than the radius of Ba⁺.

Question

Quizplus · Accepted Answer

The ionization energy is the energy required to remove an electron from an atom or ion, and it increases as the electron being removed becomes closer to the nucleus or more strongly attracted to it. In option D, the ion Ca⁺ has one electron in a P orbital which is closer to the nucleus than the electron in the P12 orbital of Ca²⁺. Therefore, it should require more energy to remove an electron from Ca⁺ than from Ca²⁺. However, the statement incorrectly asserts the opposite.

Choose the INCORRECT Statement