Atoms
What is a neutron?
A particle with no charge
Where are Protons and Neutrons located?
Inside the nucleus
What are the rows on the periodic table called?
Periods
How many valence electrons does Radium have?
2
What are the 3 major categories on the periodic table?
Metal, non metals, metalloids
What is a proton?
The positively charged particle
atomic number of Boron
5
What are the columns in the periodic table called?
Groups
How many valence electrons does Ne have, using the periodic table?
8
Which of the three have properties of both metals and non metals?
metalloids
What is an Electron?
The negatively charged particle
number of electrons of Calcium
B. Calcium has 20 Electrons
write 2 characteristics of Group 1
most reactive metals, valence electrons= 1
Which element has 84 electrons?
Po or Polonium
Which element is classified as a non metal?
A. Lithium B. Hydrogen C. Boron
B. Hydrogen
Which particles have the same mass?
Protons and Neutrons
number of neutrons that Neon has?
Neon has a mass number of 20.
10
On the periodic table, what do the 7 Periods mean?
How many energy levels that period has
Which element has 9 protons?
Fluorine
The element in group 6, period 6 is classified as?
A. Metal B. Non Metal C. Metalloid
A. Metal
In an atom, which subparticle has the least mass?
Electrons
The electrons located at the outer most energy level are called?
Valence Electrons
how many energy levels does Oxygen have?
how many valence electrons does Oxygen have?
Energy levels = 2
Valence electrons= 6
Name of the element in Group 5, Period 6
Ta or Tantalum
Which element "X" has 79 protons? (use periodic table)
Au or Gold