Question

Which of the following substances has the highest melting point?
NaCl
B) KCI . C) MgO
d)BaO​

Answer 1

Answer:

MgO Specialist Heating Elements. Advanced Technology

Explanation:

because +2 charge on it

Answer 2

Answer:

Magnesium oxide (MgO) has the highest melting point.

Explanation:

The exact temperature required for the conversion of substance from state of solid to liquid state is called its melting point. The melting points of the substance given in the options are as follows:

• Sodium chloride (NaCl) - 801°C.
• Potassium chloride (KCl) - 770°C.
• Magnesium oxide (MgO) - 2,852°C.
• Barium oxide (BaO) - 1,923°C.

Uses of Magnesium oxide:

Magnesium oxide plays a vital role in human bodies. It is used to secure the magnesium level in blood; it helps to maintain healthy muscles; and it is used to relieve heartburn and indigestion.