periodic table

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

The period that an element is in, tells you what?

• Number of protons

• Number of electrons

• Number of valence electrons

• Number of shells

What category is silicon (Si) a part of?

• Metal

• Nonmetal

• Metalloid

• Halogens

What Element is in period 4, group 5A?

• Antimony

• Arsenic

• Tin

• Germanium

How many neutrons does Bromine (Br) have?

• 35

• 80

• 45

• 7

Which group of the periodic table is composed of inert (not reactive) gases with 8 valence electrons?

• alkali metals

• alkaline earth metals

• halogens

• noble gases