Periodic Table
Periodic Trends
Periodic Table 2
Element Categories
Periodic Table 3
100

The modern periodic table organizes elements according to this.

What is increasing atomic number?

100

The two reasons for the "why" of periodic trends.

What are effective nuclear charge and electron shielding?

100

Metals form this type of ion.

What are cations?

100
The very reactive elements in group 1A are known as this.
What are alkali metals?
100
The horizontal rows on the periodic table are called this.
What are periods?
200
The three classes of elements are these.
What are metals, nonmetals and nonmetals?
200

The measure of how much an atom pulls electrons from other atoms in a bond.

What is electronegativity?

200

This element has the noble gas configuration: [Ne]2s1

What is Sodium?

200
Silicon, Boron, and Tellurium are examples of this class of elements.
What are metalloids?
200

The noble gases share this characteristic with regard to their atomic structure.

What are full orbitals?

300

Being shiny, malleable, and conductors are properties of this class of elements.

What are metals?

300
The energy required to remove an electron is known as this.
What is ionization energy?
300
The reactive elements in group 2A are known as this.
What are alkali earth metals?
300
This class of elements are good conductors of heat and electric current.
What are metals?
300

Elements in the same group share these characteristic

What are chemical and physical properties?

400
This class of elements are poor conductors of heat and electricity.
What are nonmetals?
400

How easily an atom loses or gains electrons

What is reactivity?

400
The elements in group 7A are known as this.
What are the halogens?
400

Nonmetals form this type of ion.

What are anions?

400

The vertical columns on the periodic table are called this.

What are groups?

500
This class of elements have properties of both metals and nonmetals.
What are metalloids?
500

This trend decreases from left to right across a period and increases from top to bottom.

What is atomic radius?

500
The nonreactive elements in group 8A are known as this.
What are the noble gases?
500
Being brittle, dull, and insulators are properties of this class of elements.
What are nonmetals?
500

The highest energy level (n) can be found by knowing this.

What is the period number?

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