Periodic Table, Lewis Dot Structures

Front

What are the vertical columns in the Periodic Table called?

Back

Groups

Front

How many electrons can fit in the second energy level?

Back

8

Front

How are elements arranged in the periodic table?

Back

Elements are arranged in increasing atomic number from left to right.

Front

How many protons does Lithium have?

Back

3

Front

What is the Lewis dot diagram for Boron?

Back

Boron has 3 valence electrons, represented as •B•.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of the atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes.

Front

What do the rows in the Periodic Table represent?

Back

Rows are called periods and represent energy levels of electrons.

Front

What is a valence electron?

Back

Valence electrons are the electrons in the outermost shell of an atom.

Front

How many total electrons can the first energy level hold?

Back

2