Calculating subatomic particles

Multiple Choice

Which of the following best describes the atomic number of an element?

• The total number of protons in the nucleus

• The total number of neutrons in the nucleus

• The total number of electrons in the atom

• The sum of protons and neutrons

Multiple Choice

Based on the periodic table, how would you determine the number of neutrons in an atom of a given element?

• Subtract the atomic number from the mass number

• Add the atomic number and the mass number

• Divide the mass number by the atomic number

• Multiply the atomic number by the mass number

Multiple Choice

Subatomic particle found in the nucleus are _________.

• protons and neutrons
• electrons and neutrons
• protons and electrons
• electrons only

Multiple Choice

Total number of  ______ is equal to the atomic number of an element.

• protons
• protons and neutrons
• neutrons
• electrons

Multiple Choice

Where are valence electrons found?

• in the outermost energy level
• in the innermost energy level
• in the nucleus
• in the electron cloud

Multiple Choice

The atomic number of an element is found

• at the top of an element's box on the periodic table
• at the bottom of an element's box on the periodic table
• not on the periodic table
• calculated by adding the protons and neutrons of an atom

Multiple Choice

Horizontal rows are called _____.

• periods
• groups
• families
• atomic numbers

Multiple Choice

Vertical columns are called _____.

• groups
• periods
• atomic numbers
• atomic columns

Multiple Choice

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

Multiple Choice

What is true about a neutral atom?

• The number of protons equal the number of neutrons
• The number of protons equal the number of electrons
• The number of neutrons equal the number of electrons
• The number of protons, neutrons, and electrons are all different

Multiple Choice

The modern periodic table is organized with the elements in order of increasing _____.

• atomic number
• atomic mass
• nuclear number
• quantum number

Multiple Choice

The period number tells ____.

• atomic number
• the number of energy levels
• the number of valence electrons
• the number of protons

Multiple Choice

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

Multiple Choice

How many electrons does potassium K contain? (click to see image)

• 19
• 39
• 20
• 40

Multiple Choice

How many neutrons are in this element?

• 26

• 56

• 82

• 30

Multiple Choice

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Multiple Choice

How many neutrons are in Tungsten

• 110

• 74

• 183

• 258

Multiple Choice

How many neutrons are in Tungsten

• 110

• 74

• 183

• 258