The answer to problem is [He] 2s1. Hope it helps
Answer:
The correct answer is "three groups of plants—a group fertilized by X, a group fertilized by Y, and a control group with no fertilizer".
Explanation:
I had to look for the problem to know the options.
The best way to determine which fertilizer is most effective is to have three evaluation groups. One group will be tested with fertilizer X and another with fertilizer Y. By leaving the third group without applying fertilizer, this will be the general pattern for comparing the effectiveness of the other two.
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It can form a covalent bond with a hydrogen bond that has one valence electron to have eight valence electrons and become stable.
Answer:
i know the answer the answer is valence electrons.