Periodic Table Review

Elements in the same period/row have the same

• # of valence electrons

• # of energy shells

• # of protons

• # of neutrons

Which element is NOT in Period 3 on the Period Table? (use your periodic table)

• Na

• P

• Ar

• Ne

The atoms of a certain element each contain 18 protons and 8 valence electrons. What is the element's name? (use your periodic table)

• Argon

• Neon

• Krypton

• Sodium

Tags

NGSS.MS-PS1-1

How many protons will the element with 7 valence electrons, 4 energy levels have?

• 9

• 34

• 16

• 35

How many electrons will the element in Group 13, Period 4 have? (use your periodic table)

• 31

• 11

• 13

• 54

How many periods are on the Periodic Table? (use your periodic table)

• 6

• 7

• 8

• 9

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

• Magnesium (Mg)

• Rubidium (Rb)

• Barium (Ba)

• Francium (Fr)

Elements in the same group ---

• have similar reactivity

• have the same # of energy shells

• are in the same period

These types of elements are BRITTLE and DO NOT conduct electricity

• metals

• nonmetals

• metalloids

Which elements have 3 valence electrons?

• Scandium and Aluminum

• Aluminum and Boron

• Boron and Lithium