H2PO2- is polar.
True
False

False

H2N2 is used in organic synthesis. This compound can exist as two distinct species, one that is polar and one that is nonpolar; but the H-H bond is said to be nonpolar.

There are two main types of stem cell: embryonic stem cells and adult stem cells. Embryonic stem cells can develop into all the cells of the adult body. Adult stem cells come from an organ or tissue and can develop into specialized types of cell within the organ or tissue. Hope this helps! Mark please!