Which of the following statements is true?
A)The krypton 1s orbital is smaller than the helium 1s orbital because krypton's nuclear charge draws the electrons closer.
B)The krypton 1s orbital is larger than the helium 1s orbital because krypton contains more electrons.
C)The krypton 1s orbital is smaller than the helium 1s orbital because krypton's p and d orbitals crowd the s orbitals.
D)The krypton 1s orbital and helium 1s orbital are the same size because both s orbitals can only have two electrons.
E)The krypton 1s orbital is larger than the helium 1s orbital because krypton's ionization energy is lower,so it's easier to remove electrons.

Question

Quizplus · Accepted Answer

The size of an orbital is determined by the nuclear charge and the number of electrons. Krypton has a higher nuclear charge than helium, which pulls the electrons in closer, making the krypton 1s orbital smaller than the helium 1s orbital. The number of electrons in the orbital does not affect its size. The presence of p and d orbitals does not affect the size of the s orbital. The ionization energy does not directly affect the size of an orbital.

Which of the Following Statements Is True