Question

based on patterns in the periodic table, which list shows the acids in order from strongest to weakest? (1 point) hcl, ph3, h2s h2s, ph3, hcl hcl, h2s, ph3 ph3, h2s, hcl

Explanation:

Step1: Recall acid - strength trend

The strength of binary acids (HX) increases as the electronegativity of the non - hydrogen atom (X) increases across a period and as the size of the non - hydrogen atom increases down a group.

Step2: Identify electronegativities

The electronegativity of Cl > S > P. In the compounds HCl, H₂S, and PH₃, Cl is the most electronegative, followed by S, and then P.

Step3: Determine acid strength order

Since a more electronegative atom can better stabilize the negative charge on the conjugate base, the acid strength is HCl > H₂S > PH₃.

Answer:

HCl, H₂S, PH₃ (corresponding to option: HCl, H₂S, PH₃)