Identify the functional group(s) that appear in the molecule cortisone (a major hormone synthesized by the human adrenal cortex).

Ketone, alcohol and unsaturation

Explanation:

The functional groups are the groups that identify the organic function of the molecule. For example, the hydroxyl (-OH) represents alcohol, the carbonyl (represented in the figure below) can represent a ketone or an aldehyde, and so each function has its representation.

The cortisone molecule is represented below, and each group is marked in blue. They are:

a, c, and d = carbonyl of ketone;

b =  unsaturation (double bond) of alkene;

e, and f = hydroxyl of alcohol.

your answer would be a. 12.5 kg

"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."