Why are bromine and potassium likely to react with one
another?

Potassium reacts with Bromine to produce Potassium Bromide. ... Bromine needs to gain one electron to have a noble gas configuration or 8 valence electrons. Potassium needs to lose one, so they make a perfect pair to transfer electrons in an ionic bond

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the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be