Which of the following elements would be expected to have chemical and physical properties most similar to those of the krypton (Kr)?
A)neon (Ne)
B)gallium (Ga)
C)sodium (Na)
D)tin (Sn)
E)chlorine (Cl)

Question

Quizplus · Accepted Answer

Krypton (Kr) and neon (Ne) are both noble gases and thus have very similar physical and chemical properties. They both have full outer electron shells, making them non-reactive, and have low boiling and melting points. In contrast, gallium (Ga), sodium (Na), tin (Sn), and chlorine (Cl) are all reactive elements with different physical properties, making them unlikely to have similar properties to Kr.

Which of the Following Elements Would Be Expected to Have