Ben will be conducting an experiment in which he reacts metals with different concentrations of acid in test tubes. what should ben wear to best protect himself during the experiment?
a)heat-proof gloves, a lab coat, and close-toed shoes
b)a lab coat, chemical gloves, and close-toed shoes
c)goggles, a lab coat, and heat-proof gloves
d)goggles, a lab coat, chemical gloves, and close-toed shoes

Option (D) is the correct answer.

Explanation:

During any kind of experiment in the laboratory, it is very important to take proper safety measures in order to protect oneself.

For example, we should wear loose cloths, googles, chemical gloves etc in order to ensure our safety in the laboratory.

Therefore, while conducting an experiment with metals and acids it is required that Ben should wear goggles, a lab coat, chemical gloves, and close-toed shoes.

passing a magnet thought the

mixture , because iron gets attracted to magnet .

"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."