Question

Ionic crystals can form when metallic atoms bond with nonmetallic atoms. Which of the following is an example of an ionic crystal?

A. NaOH
B. PBr5
C. Kr
D. NO2

Answer 1

NaOH is an example of an ionic crystal.

Option a

Step-by-step explanation:

Sodium Hydroxide is a "white solid ionic compound" consisting of sodium cations Na+ and hydroxide anions
`OH^-`. If we look at the crystal structure of NaOH, we can see that it has the combinations of ionic and covalent bonds. The bond that is shared between Oxygen ( O ) and Hydrogen ( H ) is the covalent bond.

The Sodium ( Na ) is bonded with an "ionic bond to the hydroxide part of the compound". NaOH is an ionic solid because it is formed by the combinations of metal and non-metal. When the crystal of NaOH is dissolved in water it dissociates into Na+ ions (which is ionic in nature) and
`OH^-` ions which bonds ionically to the other compounds.