Which of the following compounds has the lowest melting point? A)NaF B)KCl C)RbCl D)BeF₂ E)NaCl

Question

Quizplus · Accepted Answer

RbCl has the lowest melting point among the options given. This is because as you move down the group in the periodic table, the ionic bonds become weaker due to the increase in ionic size, leading to lower melting points. RbCl, with rubidium being lower in the group than sodium or potassium, will have a weaker ionic bond compared to NaF, KCl, or NaCl, resulting in a lower melting point. BeF₂ is not a standard chemical compound notation, making it an invalid comparison.

Which of the Following Compounds Has the Lowest Melting Point