Pl answer 

Asked by jain.pradeep | 26th Feb, 2020, 10:00: AM

Expert Answer:

Order of atomic size increases and electronegativity decreases from top to bottom in a group.
S
 
So, acidic strength decreases in this order-
 
H2SO4 >H2SeO4 >H2TeO4

Answered by Ravi | 26th Feb, 2020, 11:52: AM