What is the name of the ionic compound cao?
calcium oxygen
calcium oxide
calcium(i) oxide
calcium(ii) oxide

calcium oxide

Explanation: is an ionic compound because calcium element is a metal and oxygen element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

The nomenclature of ionic compounds is given by:

1. Positive ion is written first without any suffix

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

Hence, the name of is calcium oxide.

Therefore, the correct answer is calcium oxide.

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: