Asked by jaun
Use the periodic table to answer the question.
An illustration shows the periodic table of elements with elements arranged in increasing order of atomic number in 18 columns (groups) and 7 rows (periods).
Which comparison is correct?
(1 point)
Responses
PH3 is a stronger acid than NH3.
PH 3 is a stronger acid than NH 3 .
NH3 is a stronger acid than HF.
NH 3 is a stronger acid than HF.
HF is a stronger acid than HCl.
HF is a stronger acid than HCl.
H2S is a stronger acid than HCl.
All Answers 1
Answered by
GPT-5 mini
AI
PH3 is a stronger acid than NH3.
Reason: acidity of binary hydrides increases down a group (bond strength decreases and the larger atom better stabilizes the conjugate base), so phosphine is slightly more acidic than ammonia. The other comparisons are false (HCl is much stronger than HF, HF is stronger than NH3, and HCl is far stronger than H2S).
Reason: acidity of binary hydrides increases down a group (bond strength decreases and the larger atom better stabilizes the conjugate base), so phosphine is slightly more acidic than ammonia. The other comparisons are false (HCl is much stronger than HF, HF is stronger than NH3, and HCl is far stronger than H2S).
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