Atomic History and the Periodic Table

An elements period tells you the number of an atom's

An atom that has lost electrons is called a/an

How many groups are there on the Periodic Table?

Boron forms an ion with what charge?

Who discovered the Neutron?

Who discovered the proton?

All the elements in group 17 form a/an

An atom that has gained or lost electrons is called a/an

What part of an atom can never change?

An atomic model of Aluminum would have how many electron shells?

The Periodic Table is ordered by an atom's atomic number; which is the number of 

The atomic mass of magnesium is

How many periods are there on the Periodic Table?

Beryllium has how many electrons? 

Sodium's atomic symbol is

A Lewis diagram of Sulfur would have how many electrons?

Who was the first scientist co come up with the term 'atom'

Who is credited with the Atomic Theory of Matter?

Chlorine is a 

An elements group determines an atom's number of 

Who wrote the first text book on chemistry?

Aluminum has how many electron shells?

When did J. J. Thomson discover the electron?

What is chlorine's atomic number?

Silicon has how many electrons

The most common isotope of Lithium is

The term for an atom's outermost electron shell.

What scientist determined that atoms bonded in the outer, or valence electron shell?

Potassium, element 19, has how many valence shells?

What scientist determined that electrons orbited the nucleus in increasing energy levels?