Nail polish remover is something that girls just can't do without. Which of the following has been used as the active ingredient in nail polish remover? acetone
ethanol
limonene
methanol

acetone

Explanation:

Acetone, or propanone, is a natural compound with the equation (CH₃)₂CO. It is the easiest and littlest ketone. It is a dry, profoundly unstable and combustible fluid with a trademark sharp smell. It is commonly used in nail polish remover because of it's hydrogen and carbon compounds.

Molar mass: 58.08 g/mol

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

b.final