Atomic halogens greatly speed the rate of ozone destruction through several steps in which they themselves are consumed and then regenerated. Rearrange the following chemical equations as needed and then combine them to show how Br atoms react with ozone to form oxygen but are not consumed in the overall process. Neither the Br atom nor the BrO radical should appear in the final chemical equation Reaction (a) Br(g) +O_3(g) rightarrow BrO (g) O_2 (g)
Reaction (b): Br(g)+2O_2(g) rightarrow BrO (g) O_3(g)

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.