Chapter 2 Notes Quiz

How many protons does the pictured nuclide have?

• 30

• 12

• 24

• 24.305

What is the mass number of the following nuclide?

• 30

• 12

• 24

• 24.305

The weighted average of the masses of the naturally occurring isotopes of a particular element reported in atomic mass units. 

• Atomic Mass

• Atomic Weight

• Atomic Number

• Atomic Symbol

The horizontal rows of the periodic table are called

• periods

• groups

• columns

• families

Group 1A of the periodic table is also called the

• halogens

• noble gases

• transition metals

• alkali metals

The ____ shows how the electrons are arranged in an atom’s orbitals.  

• atomic mass

• atomic number

• electron configuration

• halogenation

Electron shells are divided into subshells, identified by the letters

• a, b, c, d

• q, w, e, r, t, y

• x, y, z

• s, p, d, f

The chemical properties of an element depend on the number of electrons in the

• entire electron cloud

• valence shell

• lowest energy level

• nucleus

How many valence electrons does the pictured element have?

• 3

• 13

• 26

• 27

The ____is the energy needed to remove an electron from a neutral atom. 

• atomic radius

• ionization energy

• valence energy

• atomic energy