What is the ph of a solution formed at the neutralization point by the reaction of 25.0 ml of 0.180 molar acetic acid (ka = 1.8 × 10-5) and 35.0 ml of 0.250 molar sodium hydroxide?

453.87 (whatever label you use, most highschools are different but i dont want to give you the wrong label!)

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts