Oxygen's valence, based on the Number of valence electrons or outermost electrons that oxygen has would be 6.
Answer:
Actually, The ionic charging of : alkali is +1 alkaline earth metals is +2 aluminum is +3. That is the use periodic table to recall the lonic charge of an alkali metal, an alkaline earth metal, or aluminum
Explanation:
Answer:
Friedrich Miescher discovered nucleic acids in blood cells.
Nuclein was discovered by Friedrich Miescher in 1869
Explanation
In the somewhat early 1880s Albert Kossel further purified the substance and discovered its highly acidic properties. Then he later discovered the nucleobases. In 1889 Richard Altman creates the term nucleic acid. Friedrich Miescher was the first scientist to ever isolate nucleic acid.
A is the answer. Hope that helped.
