The first one is 2
The second is 1
The third is 6
And the fourth is 3
Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. ... Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours.
Answer:
u will equate and make V2 the subject because it's the one u are looking for ....
Answer:
(NH4)2Cr2O7
Explanation:
Hope this somehow helped.
I think you forgot to attach a picture
