Bohr's, Ions Exam

Where are valence electrons found?

• On the inside shell

• On the middle shell

• On the outside shell

• In the nucleus

A new row is started on the periodic table when what is added?

• Neutrons

• Protons

• Electrons

• A valence orbital shell

Elements are arranged by increasing number of

• protons

• atomic mass

• expected electrons

• all of the above

How many electrons are in the valence shell of Boron if Boron has an atomic number of 5?

• 2

• 3

• 5

• 8

Why do atoms become ions?

• they lose electrons

• they gain electrons

• they want to have a full valence shell

• all of the above

Which ion is positive?

• anion

• cation

• zion

• none of the above

Chose ALL the atoms that are likely to become anions (more than one)

• Cl

• Cs

• Li

• O

• He

Chose ALL the elements that do not react because they have full valence shells (more than one)

• Li

• Ar

• H

• Ne

• F

How many electrons are in the valence shell of Nitrogen if Nitrogen has an atomic number of 7?

• 2

• 3

• 5

• 8

How many orbital shells does Na (sodium) have

• 1

• 2

• 3

• 4