Answer:
Its bonds are formed by large differences in electronegativity.
Step-by-step explanation:
The electronegativity of the elements present in the given compound are:
Calcium:1
chlorine: 3.16
thus the difference between calcium and chlorine is 2.16. which is considered a very large difference making the bond between calcium and chlorine purely ionic.
The other statements are false
1) It has only metallic bonds between the atoms.: there is no metallic bond. metallic bonds are present between metal atoms.
2) It has only covalent bonds between the atoms.: the covalent bond are formed between non metallic elements.
3) as calculated the difference is large thus this is also wrong Its bonds are formed by small differences in electronegativity.