The Aufbau principle states that, hypothetically, electrons orbiting one or more atoms fill the lowest available energy levels before filling higher levels (e.g., 1s before 2s). In this way, the electrons of an atom, molecule, or ion harmonize into the most stable electron configuration possible.
The first one is D, the second one is A and the last is C and D
Tertiary consumers are the highest trophic levels.
C is the answer hope the answer is right
Give the positional isomers of 2 halopropane
(CH3)2CH
answer:
is in file download it
