Aliquid at room temperature and with 45 neutrons, you will find this element in group 7.

- Bromine

Explanations:- 7th group elements are known as halogens and these are fluorine, chlorine, bromine, iodine and astatine. At room temperature, fluorine and chlorine are gases, bromine is liquid, iodine is solid and astatine is a post transition metal.

In question, it says the element is liquid at room temperature, so it would be bromine since only bromine is liquid at room temperature.

Atomic number of Bromine is 35 and mass number is around 80. So number of neutrons = 80 - 35 = 45

It is also confirmed from neutrons calculations that the element is bromine.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.