A dark blue beaker labeled 100 millimeters Y has an arrow leading to a pale blue beaker labeled 90 millimeters H subscript 2 O. This has an arrow leading to a white beaker labeled 99 millimeters H subscript 2 O. The first arrow has a label 10 millimeters over it. The second arrow has a label 1 milliliter over it. The dark blue beaker has a box below it labeled Beaker number 1 p H = 2. The pale blue beaker has a box below it labeled Beaker number 2 p H = ?. The white beaker has a box below it labeled beaker number 3 p H = ?. If the pH of Beaker.

"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."

1. they vary with a higher number because boiling is way hotter than melting