Chem Basics Review

What do the vertical columns on the periodic table tell us?

• The number of orbitals

• The number of valence electrons (electrons on the outer most shell)

What are the horizontal rows on the periodic table called?

• periods

• groups

• metals

• nonmetals

• metalloids

What does the number of proton tell us?

• electrons

• atomic number

• atomic mass

• neutrons

How many protons and electrons does nickel have?

• 28

• 58.69

How many orbitals does Nickel have?

• 3

• 4

• 5

• 10

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Name this group: These metals are the most reactive.

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Name this group: These metals are the second most reactive.

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