If the diploid number of an onion cell is 16, what is its haploid number?

8

Explanation:

The haploid number is always half of the diploid number so half of 16 is 8

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.