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