What is the atomic mass of boron?
5 amu
12.32 amu
10.8 amu
The atomic mass of boron is 10.8 amu.
How does the periodic table help to predict the properties of elements?
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Elements in the same group have similar properties
Elements in the same period have similar properties
The number of protons in an atom's nucleus
Elements with higher atomic numbers are more reactive
Elements with lower atomic masses are more reactive
Elements in the same group have similar properties.
If the atomic number of an element is six and the atomic mass is 15, how many neutrons does it have?
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6 Neutrons
9 Neutrons
15 Neutrons
To find the number of neutrons, subtract the atomic number from the atomic mass.
So, for an element with an atomic number of 6 and an atomic mass of 15, the number of neutrons would be 15 - 6 = 9 neutrons.
The atomic mass of boron is 10.8 amu.
The atomic mass of boron can be found by referring to the periodic table. To locate the atomic mass of boron, you can look at the number that is typically found below the element symbol.
In this case, the atomic mass of boron is approximately 10.8 amu.