Periodic Table
The number of electrons that fit in the second level.
What is 8?
This element is radioactive, has a mass of 237 and is named after a planet.
What is Neptunium?
How many neutrons Zinc has.
What is 35?
Element that has 136 neutrons.
What is Radon?
The number of gases on the periodic table?
The element that has 33 electrons.
What is Arsenic?
Figure out the number of electrons for each level of sodium.
2, 8, 1