Chapter 5- Quiz

 

 

  1. How many protons and electrons are in each atom?
    1. Flouring
    2. Aluminum
    3. Calcium

 

  1. Complete The Table:

 

Element

K

 

 

 

Atomic Number

19

 

16

 

Protons

 

 

 

23

Electrons

19

5

 

 

 

  1. Boron has two isotopes: Boron- 10, and Boron 11. Which is more abundant, given that the atomic mass of boron is 10.81?

 

 

 

 

  1. There are three isotopes of silicon; they have mass numbers of 28, 29, and 30. The atomic mass of silicon is 28.086 amu. Comment on the relative abundance of these three isotopes.

 

 

 

  1. Calculate the atomic mass of bromine. The two isotopes of bromine have atomic masses and relative abundance of 78.92 amu (50.69%) and 80.92 amu (49.31%)

 

 

 

 

 

 

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