Question

Which of these elements is least likely to react with other elements<br /><br />

A. calcium<br /><br />
B. Argon<br /><br />
C. sodium <br /><br />
D. Nitrogen<br /><br />
E. Oxygen<br /><br />
F. Chlorine

Answer 1

B. Argon because it is a noble gas and has 8 valence electrons. Noble gases are very very stable and rarely react with other elements.