Question

which statement best describes how potassium bonds with bromine?
potassium will donate an electron to bromine.
bromine will donate an electron to potassium.
bromine will donate seven electrons to potassium.
potassium will share seven electrons with bromine.

Explanation:

Step1: Determine element types

Potassium is a metal (Group 1), bromine is a non - metal (Group 17).

Step2: Analyze electron transfer

Metals tend to lose electrons, non - metals tend to gain electrons. Potassium has one valence electron. Bromine needs one electron to complete its octet. So potassium donates one electron to bromine.

Step3: Eliminate wrong options

Bromine won't donate electrons (it's a non - metal that gains electrons), so "Bromine will donate an electron to potassium" and "Bromine will donate seven electrons to potassium" are wrong. They form an ionic bond (not covalent), so "Potassium will share seven electrons with bromine" is wrong.

Answer:

Potassium will donate an electron to bromine.