Write a balanced equation describing the reduction of H2SeO4 by SO2 to produce selenium. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.)

Explanation:

We are to write a balanced equation from the information given above by including the states of their matter according to SATP conditions;

From above;

The oxidizing agent is

The reducing agent is

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.