Which of the Following Is TRUE Regarding Index of Hydrogen

question 21

Multiple Choice

Which of the following is TRUE regarding index of hydrogen deficiency (IHD) ?

• A) When calculating IHD, oxygen does not change the number of H atoms in the parent formula, halogens are considered equal to hydrogen, and nitrogen requires one additional hydrogen atom in the parent formula.
• B) When calculating IHD, oxygen requires one additional hydrogen atom in the parent formula, halogens are considered equal to hydrogen, and nitrogen does not change the number of H atoms in the parent formula.
• C) When calculating IHD, oxygen is treated like hydrogen, halogens require one additional hydrogen atom in the parent formula, and nitrogen does not change the number of H atoms in the parent formula.
• D) When calculating IHD, oxygen does not change the number of H atoms in the parent formula, halogens are considered equal to hydrogen, and nitrogen requires two additional hydrogen atoms in the parent formula.
• E) When calculating IHD, oxygen and halogens do not change the number of H atoms in the parent formula, and nitrogen requires two additional hydrogen atoms in the parent formula.

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