2 atome nitrogen , 1 is correct
The chemical formula for acido perbromico is HBrO4 or perbromic
acid or bromate. It is an inorganic compound and an oxoacid of bromine. When an
H+, the –ate ion is –ic acid: one less O is –ous acid, ttwo less is hypo- -ous
acid and one more is per- -ic acid.
A. The fact that it's less dense than cold air.
Magents have a North and South magnetic attraction and North and North don't attract South and south don't attract either . Only north and south attract which is when they are facing each other that's why they say opposites attract
