8.5 C Periodic Table Morris Ms

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Each row in the periodic table is called a 

• group
• period
• cluster
• unit

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atomic number tells you what?

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

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

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

The atomic number of this pictured element is

• 28
• 58.6934
• Ni
• Nickel

A(n) _______ electron is _______ the nucleus.

• spinning,  closest to
• valence,  attached to
• valence, farthest from
• negative, inside

How many electrons do atoms need to be stable?

• 1
• 2
• 6
• 8

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

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

An element with five valence electrons is

• phosphorus
• oxygen
• beryllium
• rubidium