Cde Science

Elements in the same period/row have the same--

• # of valence electrons

• # of protons

• # of energy shells

• # of neutrons

How many periods are on the Periodic Table?

• 6

• 7

• 8

• 9

Which element is NOT in Period 3 on the Periodic Table?

• Na

• Ar

• P

• Ne

How many protons will the element in Group 7A, Period 4 have?

• 9

• 16

• 34

• 35

What element has similar properties of Cesium (Cs), but a larger atomic mass?

• Magnesium (Mg)

• Barium (Ba)

• Rubidium (Rb)

• Francium (Fr)

Elements in the same group/family--

• have the same # of valence

• behave the same

• have the same # of energy shells

• are in the same period

How many neutrons will the element in Group 2A, Period 2 have?

• 2

• 3

• 5

• 6

These types of elements are BRITTLE and DO NOT conduct electricity.

• Metals

• Nonmetals

• Metalloids

Which elements have 3 valence electrons?

• Scandium

• Boron

• Aluminum

• Lithium

Scandium (Sc) and Calcium (Ca) are both in the same group/family.

• True

• False