Which two elements will most likely form an ionic bond?

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

B. Magnesium and Bromine

Explanation:

Magnesium is you solid based element in the compound or bond. With ability to conduct electricity when applied to bromine your non-metal. Bromine is one of the two liquids on the periodic table along with mercury so it can be tricky to test in water.   Lastly the test in Edgenuity( or wherever you took this test) the first answer krypton and lithium could be a possible answer, but on the test your correct answer is B. Magnesium and Bromine.

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates