2 KCIO3 → 2 KCI + 3 02 How many moles of oxygen are produced when 6.70 moles of KCIO3 decompose completely?

☆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

Is there a picture or answer choices?

Combustion is the act or process of burning. therefore, i believe the answer is  a: burning wood. 

Answerhund's rule;