HSO3''(aq) + H2BO:'-(aq) → SO32-(aq)
+ HBO3(aq)
A conjugate acid-base pair in this system is

Ithink its solid. hope this

☆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

C. control over the business