The answer is A. same atomic number; different number of protons
Carbon has 4 electrons in its outermost shell.it shows tetravalency and catination property hence forms long chain of carbon .
Answer:
a - carbon is not toxic to living things
Explanation:
The reason carbon dating works is that the fresh carbon-14 gets mixed in with the rest of the carbon in the atmosphere and, since it's chemically identical to regular carbon, gets worked into whatever is presently absorbing atmospheric carbon
The solubility curve is a plot of solubility against temperature.
<h3>What is solubility?</h3>
The term solubility refers to the amount of substance that dissolves in solution at a given temperature. Hence, the solubility curve is a plot of solubility against temperature.
Thus, from the solubility curve (not shown) the amount if HCl dissolved can be obtained hence the question is incomplete.
Learn more about solubility:brainly.com/question/8591226
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