Which mineral might scratch the mineral fluorite but would not scratch the mineral amphibole

Apatite

Explanation: According to the Mohr's hardness scale, fluorite has a hardness of 4, whereas amphibole (which belongs to the hornblende field) has a hardness of about 5-6. And the hardness of apatite is 5.

So by comparing their hardness, we can determine that Apatite can easily scratch the mineral fluorite because it has higher hardness than fluorite, but apatite will not be able to scratch amphibole because apatite has a lower hardness compared to amphibole.

"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."