Atomic Structure Quiz

What is the atomic number of an element?

• The atomic number of an element is the number of electrons in the nucleus of an atom.

• The atomic number of an element is the number of neutrons in the nucleus of an atom.

• The atomic number of an element is the number of protons in the nucleus of an atom.

• The atomic number of an element is the number of molecules in the nucleus of an atom.

What is the trend of atomic size as you move from left to right across a period in the periodic table?

• Becomes unstable

• Decreases

• Increases

• Remains constant

What is the trend of atomic size as you move from top to bottom down a group in the periodic table?

• Increases

• Remains constant

• Becomes unstable

• Decreases

How does the number of valence electrons relate to an element's reactivity?

• Elements with fewer valence electrons tend to be more reactive

• Elements with more valence electrons tend to be more reactive

• Elements with an odd number of valence electrons tend to be less reactive

• The number of valence electrons has no effect on an element's reactivity

How many protons are in carbon?

• 6

• 7

• 8

• 27

What is the chemical symbol for carbon?

• Ca

• C

• K

• De

True or false the atomic number of oxygen is 10?

• True

• False

How are elements on a periodic table ordered

• Similaritys

• Differences

What are periods on a periodic table

• Up and Down

• Left to Right

What are groups on a periodic table?

• Up and down

• Left to right

• Top left to bottom right