Sodium and calcium are both metals and will not form a chemical bond with one another. It's possible they could form a solid metal solution called an alloy.
Sodium sulfide has an ionic bond.
ionic bond
Calcium a nd nitrate are ions so they form only ionic bond.
Since Sodium is metal and Nitrogen is Non-Metal, hence Metal and Non-Metal bond will form an Ionic Bond
sodium citrate bond
covalent bond
Sodium Chloride, Sodium Fluoride, Calcium Chloride, etc... are all IONIC BONDS.
Sodium sulfide has an ionic bond.
It is an ionic compound. The bond between sodium and Chlorine is an ionic bond.
Ionic
ionic bond
Calcium a nd nitrate are ions so they form only ionic bond.
Ionic bond.
They can be expected to form ionic bonds.
Since Sodium is metal and Nitrogen is Non-Metal, hence Metal and Non-Metal bond will form an Ionic Bond
The bond between calcium and sulfur would be ionic. The corresponding compound would be calcium sulfide.
Ionic bond, as the difference in electronegativity between calcium and fluorine is over 1.7