S2.2 The covalent model

S2.2 The covalent model Quiz

IB Chemistry HL: Quiz

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5 questions, one answer each

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  1. 1. (HL) What is the shape of PCl₅?

    • A. Octahedral
    • B. Trigonal bipyramidal
    • C. Square pyramidal
    • D. Seesaw

  2. 2. (HL) How many σ and π bonds are in ethyne, C₂H₂?

    • A. 3 σ, 2 π
    • B. 5 σ, 0 π
    • C. 2 σ, 3 π
    • D. 3 σ, 1 π

  3. 3. (HL) What is the hybridisation of the nitrogen atom in NH₃?

    • A. sp
    • B. sp²
    • C. sp³
    • D. No hybridisation

  4. 4. (HL) Which ion has three resonance structures?

    • A. NH₄⁺
    • B. NO₃⁻
    • C. OH⁻
    • D. CH₄

  5. 5. Which substance has only London forces between its molecules?

    • A. CH₃Cl
    • B. H₂O
    • C. CCl₄
    • D. NH₃

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