Question

Distinguish between nucleus and nuclei .??
Please explain??

Answer 1

Nucleus is the singular version of the word and nuclei is the plural.

An atom has a nucleus at is core which is composed of 1 or more protons and 0 or more neutrons, a dozen atoms have 12 nuclei.

If you are talking about the biological cells, the nucleus is the central organelle of a eukaryotic cell and contains the nucleic DNA. Again, nuclei is the plural.

Answer 2

Nucleus is just the singular form and Nuclei is the plural form. Nucleus (pl: nuclei) is a Latin word for the seed inside a fruit. It may refer to: Atomic nucleus, the very dense central region of an atom. Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA.