Unit 2 The Atom Review

A neutral atom may contain 8 protons

• 9 neutrons and 10 electrons

• 9 neutrons and 8 electrons

• 8 neutrons and 10 electrons

• 10 neutrons and 9 electrons

You can determine the identity of an element if you know how many (a)   it has.

• protons

• neutrons

• electrons

• energy levels

The nucleus of an atom has all of the following characteristics EXCEPT that it

• is positively charged.

• contains nearly all of the atom’s mass.

• is very dense.

• contains nearly all of the atom’s volume.

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of (a)   . A. 5 B. 6 C. 8 D. 11

• 5

• 6

• 8

• 11

How many valence electrons does an atom of magnesium typically have?

• 2

• 3

• 12

• 24

How many valence electrons does an atom of aluminum typically have?

• 2

• 3

• 13

• 27

The name of the force that is able to overcome the repulsive force between protons in an atom is the (a)   .

• Strong Nuclear Force

• Electromagnetic Force

• Gravitational Force

• Weak Nuclear Force

The number of energy levels an atom will have is based on the number of ​ (a)  

• protons
• Energy Levels

• electrons
• Neutrons

Which of the following would NOT be found in the nucleus of an atom?

• protons

• neutrons

• electrons

• quarks

Which statement about the arrangement of the periodic table is not true?

• Noble gases are on the right side of the periodic table.

• Metals are found on the right side of the periodic table.

• Halogens are on the right side of the periodic table.

• Transition metals are in the center of the periodic table.