Periodic Table
What number tells you the number of protons and also tells you the number of electrons?
Atomic Number
What is the center of the atom?
Nucleus
What is the name of the element with 79 protons?
Gold
How many elements have 3 energy levels??
8
How many electrons fit on the first energy level?
2
What particle has a positive charge?
Proton
What element has an atomic mass of 238.
U, Uranium
What element has 17 electrons?
Chlorine
How many electrons fit on the second energy level?
8
What particle has no charge?
Neutron
What is the name of the element with 12 neutrons?
Magnesium
What element has 2 energy levels and 7 valence electrons?
Fluorine (F)
What subatomic particle can be counted to identify the element?
What particle has a negative charge?
Electron
Which element has 27 as its atomic number?
Co, Cobalt
Figure out the number of electrons for each level for Sulfur.
2) 8) 6)
What is a valence electron and why are they important?
They are the electrons in the outermost energy level and they are responsible for bonding (or reactivity)
What is the mass of a proton?
1 AMU (Atomic Mass Unit)
Name the element with 2 energy levels AND the second level is full.
Neon
What element has 1 proton, 1 electron, and no neutrons?
Hydrogen
Explain the octet rule.
Atoms attempt to empty or fill their outermost level by sharing, stealing, or giving up electrons.