Happy siblings day to brothas and sistas there so cute this was on easter

Predict the products butane (c4h10) + oxygen —>

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Name the element in group 17, period 2. (periodic table)