Unit 4 Test Review-Electrons in Atoms

An s orbital is in the shape of a dumbbell.

• True
• False

An atom that gains an electron will form a positive ion.

• True
• False

Elements in the same family (group) tend to have the same number of valence electrons.

• True
• False

The octet rule states that atoms will gain, lose, or share electrons to achieve a complete set of eight valence electrons.

• True
• False

An element can be identified by the characteristic bright-line atomic emission spectrum it can produce.

• True
• False

There are a total of 5 different types of d-orbitals.

• True
• False

How many electrons should be in this atom’s 1ST energy level?

• 0
• 1
• 2
• 3

What is the nuclear charge of this atom?

• +2
• –2
• +1
• 0

How many electrons should be in this atom’s second energy level?

• 0
• 1
• 2
• 3

What is the mass number of this atom?

• 1
• 4
• 0
• 2