The process by which hydrogen and oxygen combine to form water can be classified as a what
1 answer:
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Answer:
B. 138
Explanation:
Based on isotope notation:
For the atom A, the mass number, X, is the sum of neutrons and protons and
n is the number of protons = Atomic number.
The number of protons depends of the nature of the atom. For example, Carbon has 12 protons, hydrogen 1 and <em>Radium has 88 protons.</em>
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The radium-226 means the mass number is 226. Thus, number of neutrons are:
Mass number - Atomic number
226 - 88 = 138
Right answer is:
<h3>B. 138 </h3>