Multiple Choice
Which of the following is closest to the atomic mass of krypton (Kr)?
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Atomic Mass
Multiple Choice
What is the atomic mass of a boron atom that has 6 neutrons?
A
5 amu
B
11 amu
C
6 amu
D
10 amu
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Verified step by step guidance1
Recall that the atomic mass of an atom is approximately the sum of the number of protons and neutrons in its nucleus.
Identify the number of protons in a boron atom. Since boron has an atomic number of 5, it has 5 protons.
Note the number of neutrons given in the problem, which is 6 neutrons.
Calculate the atomic mass by adding the number of protons and neutrons: \(\text{Atomic mass} = \text{Number of protons} + \text{Number of neutrons}\).
Substitute the values: \(\text{Atomic mass} = 5 + 6\) to find the atomic mass of the boron atom.
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