Question

a cation is an atom that has______(think of how you make a cation)
lost electrons
gained electrons
added electrons
gained neutrons

cl^- has done what?
gained one proton
gained one electron
added a proton
lost one electron

Explanation:

Question 7

A cation is formed when an atom loses electrons. Losing electrons means the number of protons (positive charge) becomes greater than the number of electrons (negative charge), resulting in a positive charge. So a cation has lost electrons (and thus has more protons than electrons, leading to a positive charge). Wait, looking at the options (assuming the options are: lost electrons, gained electrons, lost neutrons, gained neutrons) – neutrons don't affect charge (they are neutral). So to form a cation (positive ion), an atom loses electrons (since electrons are negative, losing them makes the atom positive). So the correct option is the one with "lost electrons".

The ion is $\text{Cl}^{-2}$? Wait, maybe a typo, likely $\text{Cl}^{2 - }$ or $\text{Cl}^{-}$ (but let's go with the concept). An anion (negative ion) is formed when an atom gains electrons. Gaining electrons adds negative charge. So if the ion is a negative ion (like chloride ion, which is $\text{Cl}^{-}$, formed by gaining an electron), the correct option related to gaining electrons. The selected option in the image is "gained two electrons" – let's check: if the ion has a 2 - charge, it means it gained 2 electrons (since each electron is -1 charge, gaining 2 gives a -2 charge). So the correct answer is the one about gaining electrons (specifically two, if the charge is 2 - ).

Answer:

(Assuming the first option is "lost electrons") A. lost electrons (depending on the actual option labels, but the correct concept is losing electrons to form a cation)

Question 8