Question 5 of 18 in Formulae for ionic compounds

Formulae for ionic compounds

1 mark · Easy

State the formula for the ionic compound formed when sodium ions combine with bromide ions.

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NaBr

Also accept: NaBr

Common mistakes: Na2Br2; NaBr2

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Marking points

A1 · 1 mark · Correct formula: NaBr

Worked solution

Sodium forms Na$^+$ and bromide forms Br$^-$. One of each required to balance charges, so the formula is NaBr.

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