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Major product of bromination of 2-methylpropane (isobutane) in UV light

The same question, asked 2 times: 10 May 2023 S2, 11 May 2023 S1. Every wording below, oldest first.

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  1. Question 1

    10 May 2023 S2

    80
    Identify the major product formed in the bromination of 2-Methylpropane.

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  2. Question 2

    11 May 2023 S1

    51
    Identify the major product (99%) formed when (CH3)3CH(CH_3)_3CH is treated with Br2Br_2 in UV light.

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