What is the number at the bottom of the element box called?
atomic mass
How many neutrons does Potassium have?
20
Which element is in Group 2, period 4?
Calcium
How many electrons does Helium have?
2
What mass of the atom comes from which two parts?
Protons and Neutrons
If Neon has atomic number 10, how many electrons are in the last ring of Neon?
8
Where are the noble gasses found?
Group 18
Which part of the atom has a negative charge?
electron
Which element is in group 13, period 3?
Aluminum
How many liquids are on the periodic table?
2
How many neutrons does Boron have?
6
What are the two parts of the nucleus?
protons and neutrons
If Beryllium has 4 protons, 4 electrons and 5 neutrons, what is it's atomic number?
4
Which element is shown?
Oxygen
Atomic Number 12
Magnesium
What is a metaloid?
Has properties of metals and non-metals
The atomic number is the same as what atom part?
Protons and electrons