Structure of an Atom

Structure of an Atom

The three images represent different forms of hydrogen.

The red circles represent neutrons and the gray circles represent protons.

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How many protons are in the nucleus of Atom A?

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How many neutrons are in the nucleus of Atom A?

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How many protons are in the nucleus of Atom B?

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How many neutrons are in the nucleus of Atom B?

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How many protons are in the nucleus of Atom C?

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How many neutrons are in the nucleus of Atom C?

The three images represent different forms of hydrogen.

The red circles represent neutrons and the gray circles represent protons.

Fill in the Blank

How many protons are in the nucleus of Atom A?

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How many neutrons are in the nucleus of Atom A?

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How many protons are in the nucleus of Atom B?

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How many neutrons are in the nucleus of Atom B?

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How many protons are in the nucleus of Atom C?

Fill in the Blank

How many neutrons are in the nucleus of Atom C?

The three images represent different forms of hydrogen.

The red circles represent neutrons and the gray circles represent protons.

Fill in the Blank

How many protons are in the nucleus of Atom A?

Fill in the Blank

How many neutrons are in the nucleus of Atom A?

Fill in the Blank

How many protons are in the nucleus of Atom B?

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How many neutrons are in the nucleus of Atom B?

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How many protons are in the nucleus of Atom C?

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How many neutrons are in the nucleus of Atom C?

Information: Structure of the Atom

Notice the type of notation used for atoms:

^A_Z X

X = chemical symbol of the element

Z = atomic number

A = mass number

¹²₆ C, ¹³₆C, and ¹⁴₆C are notations that represent isotopes of carbon.

¹₁H, ²₁H and ³₁H are notations that represent isotopes of hydrogen.

 

¹⁴₈O, ¹⁶₈O and ¹⁸₈O are notations that represent isotopes of oxygen.

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How many protons are found in this atom?

¹₁H

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How many neutrons are found in this atom?

¹₁H

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How many protons are found in this atom?

²₁H

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How many neutrons are found in this atom?

²₁H

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How many protons are found in this atom?

³₁H

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How many neutrons are found in this atom?

³₁H

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How many protons are found in this atom?

¹⁴₈O

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How many neutrons are found in this atom?

¹⁴₈O

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How many protons are found in this atom?

¹⁶₈O

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How many neutrons are found in this atom?

¹⁶₈O

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How many protons are found in this atom?

¹⁸₈O

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How many neutrons are found in this atom?

¹⁸₈O

Multiple Choice

What structural characteristics do all hydrogen atoms have in common?

• They all have the same number of protons and neutrons

• They all have the same number of protons

• They all have the same number of neutrons

• They always have more protons than neutrons

Multiple Choice

What structural characteristics do all carbon atoms have in common?

• They all have the same number of protons and neutrons

• They all have the same number of protons

• They all have the same number of neutrons

• They always have more protons than neutrons

Multiple Choice

What structural characteristics do all oxygen atoms have in common?

• They all have the same number of protons and neutrons

• They all have the same number of protons

• They all have the same number of neutrons

• They always have more protons than neutrons

Multiple Select

How do the nuclei of the isotopes of hydrogen compare?

• They have different numbers of neutrons

• They have different numbers of protons

• They have the same number of protons

• They have different numbers of neutrons

Multiple Choice

A chlorine atom has 20 neutrons. What is its atomic number?

• 20

• 17

• 37

• 3

Multiple Choice

A chlorine atom has 20 neutrons. How many protons does it have?

• 20

• 17

• 37

• 3

Multiple Choice

A chlorine atom has 20 neutrons. What is its mass number?

• 20

• 17

• 37

• 3

Multiple Choice

A uranium atom has 140 neutrons. What is its atomic number?

• 140

• 232

• 92

• 48

Multiple Choice

A uranium atom has 140 neutrons. How many protons does it have?

• 140

• 232

• 92

• 48

Multiple Choice

A uranium atom has 140 neutrons. What is its mass number?

• 140

• 232

• 92

• 48

Multiple Choice

An isotope of potassium has a mass number of 41.

How many protons does this atom have?

• 41

• 22

• 60

• 19

Multiple Choice

An isotope of potassium has a mass number of 41.

How many neutrons does this atom have?

• 41

• 22

• 60

• 19

Multiple Choice

An isotope of mercury has a mass number of 199.

How many protons does this atom have?

• 279

• 119

• 80

• 199

Multiple Choice

An isotope of mercury has a mass number of 199.

How many neutrons does this atom have?

• 279

• 119

• 80

• 199

Multiple Choice

An isotope of sodium has a mass number of 23.

How many protons does this atom have?

• 11

• 12

• 23

• 1

Multiple Choice

An isotope of sodium has a mass number of 23.

How many neutrons does this atom have?

• 11

• 12

• 23

• 1

Multiple Choice

How many protons does ⁸⁰₃₆KR have?

• 114

• 80

• 34

• 46

Multiple Choice

How many neutrons does ⁸⁰₃₆KR have?

• 114

• 80

• 34

• 46