DP Chemistry (last assessment 2024)

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Question 21M.2.hl.TZ2.4d

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Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.hl.TZ2.4d
Level hl Paper 2 Time zone TZ2
Command term Draw Question number d Adapted from N/A
d.
[Maximum mark: 2]
21M.2.hl.TZ2.4d

Organic chemistry can be used to synthesize a variety of products.

(d)

Draw diagrams to show how sigma (σ) and pi (π) bonds are formed between atoms.

[2]

Markscheme

Sigma (σ):

Accept any diagram showing end to end/direct overlap of atomic/hybridized orbitals and electron density concentrated between nuclei.

 

Pi (π):

Accept any diagram showing sideways overlap of unhybridized p/atomic orbitals and electron density above and below plane of bond axis.

 

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