IB Chemistry SL 2.1.1 Ion Formation Question Bank

Practise IB Chemistry SL 2.1.1 by predicting electron transfer from configurations, assigning ion charges and combining cations and anions into correct ionic formulae.

Exam points

predict whether an atom gains or loses electrons to reach a stable outer configuration
deduce an ion's charge and electron configuration from its element and compound formula
balance cation and anion charges to construct a neutral empirical formula

[Maximum number: 1]

How many electrons will be gained or lost when the element with electron configuration $1 s^{2} 2 s^{2} 2 p^{3}$ forms an ionic bond?

Two electrons lost

Two electrons gained

Three electrons lost

Three electrons gained

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2.1.1—Ion formation question 1