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What is a primary halide?

Answer 1

This is a molecule where the halide is directly bound to a #CH_2# (a methylene) group.

Methyl halides, #H_3C-X#, are usually considered as a special case of primary halides. Because the ipso -carbon, the carbon to which the halogen is bound, is relatively unencumbered by groups around the carbon (other than the small hydrogens), the ipso carbon is fairly reactive, and prone to reaction.

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Answer 2

Lucy Alessi

A primary halide is a type of organic halide compound where the halogen atom is directly bonded to a carbon atom that is attached to only one other carbon atom in the molecule. In other words, the carbon atom bonded to the halogen is part of a primary carbon chain or primary carbon group.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.