Isotope Notes

Drag and Drop

When changing the number of electrons, the ​

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changes.

When changing the number of protons, the ​

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changes.

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charge

element

mass

isotope

shell

Hotspot

Which number represents the number of protons, if not there, select the bottom empty spot.

Hotspot

Which number represents the number of neutrons, if not there, select the bottom empty spot.

Drag and Drop

​

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= # protons​

​

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= # electrons

​

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= # neutrons

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92

143

235

327

Drag and Drop

For an atom with 14 protons, 16 neutrons, and 14 electrons;

A would be ​

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Z would be​

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16

2

30

14

28

Drag and Drop

For an atom with 14 protons, 16 neutrons, and 14 electrons;

E would be​

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Si

Zn

S

Ni

Drag and Drop

For an atom with 34 electrons, 34 protons, and 40 neutrons:

A would be ​

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Z would be​

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40

6

74

34

68

Multiple Choice

When calculating the average mass of Magnesium which has three isotopes: Mg-24 at 78.44%, Mg-25 at 10.00%, and Mg-26 at 11.01%.

What should the number be closest to?

• 26 amu

• 1 amu

• 2400 amu

• 24 amu

• 2600 amu

Multiple Choice

When calculating the average mass of 8% of Li isotopes hare lithium - 6, while 92% of Li atoms are lithium - 7. What is the average atomic mass,

What should the number be closest to?

• 7 amu

• 1 amu

• 6 amu

• 700 amu

• 600 amu