The maximum number of electrons:
- s sublevel: 2 electrons,
- p sublevel: 6 electrons,
- d sublevel: 10 electrons,
- f sublevel : 14 electrons.
D only..
A is pure compound
B is mixture of compound and element
C is mixture of compounds
D is mixture of elements
Are you referring to DNA?
Explanation:
here's the answer to your question
Purines are adenine and guanine. So the answer should be D (Pyrimidines). besides, phosphate group and pentose sugar are a part of a nucleotide.
