Volume of a deflated football

The length should measure about 11 inches from tip to tip, and the in circumference at the center of the football should measure about 22 inches.

Explanation:

The NFL has set measurement rules for the overall length and largest circumference at the center of the football. An official NFL football is slightly larger than high school or other professional leagues.

"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."