(1 point)
Electronegativity increases from left to right within a row of the periodic table.
Electronegativity is highest on the left and right sides of the periodic table, and lowest in the middle of a row.
Electronegativity decreases from left to right within a row of the periodic table.
Electronegativity is lowest on the left and right sides of the periodic table, and highest in the middle of a row.
Which option correctly shows the concentration of HOt ions in pure water (pH 7) ? (1 point)
1.0 × 10-14 mol/L
1.0 × 10-7 mol/L
7 mol/L
14 mol/L
1 answer
The correct pattern in electronegativity is: Electronegativity increases from left to right within a row of the periodic table.
The option that correctly shows the concentration of \( \text{H}_3\text{O}^+ \) (or \( \text{HO}^- \) ions) in pure water at a pH of 7 is: 1.0 × 10^-7 mol/L.
(Note: In pure water at pH 7, the concentration of hydrogen ions \( \text{H}_3\text{O}^+ \) is 1.0 × 10^-7 mol/L.)
