Which combination forms a covalent bond?

OA. A fluoride ion and a chloride ion
OB. A potassium atom and a sodium atom
OC. A carbon atom and a hydrogen atom
OD. A sodium ion and a chloride ion

Option C) A carbon atom and a hydrogen atom

Explanation:

A covalent bond is formed between two elements with close electronegative value. In essence, carbon and hydrogen has almost the same power to attract electrons, thus both elements combine to form a compound with covalent bond.

For example: methane (CH4), has one carbon atom linked by covalent bonds to four hydrogen atoms

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the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus