Periodic Table
What number tells you the number of protons and electrons?
Atomic Number
Ionization energy ____________ as you go from left to right across a period and ___________ as you go from top to bottom of a family.
Increases, decreases.
What is the name of element number 1?
Hydrogen
What element has the symbol Xe?
Xenon
How many electrons fit on the first energy level?
2
How do you figure out the number of neutrons?
Subtract the atomic number from the atomic mass
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 third energy level?
18
How do you find an element's atomic mass?
Add the number of neutrons and the number of protons together
What particle has no charge?
Neutron
What is the name of the element with the elemental symbol Zr?
Zirconium
What element's symbol is K?
Potassium
Figure out the number of electrons on each energy level for NEON
2) 8)
How many liquids are on the periodic table?
2
What particle has a negative charge?
Electron
Which element has 42 as its atomic number?
Mo, Molybdenum
What element is a gas with 22 neutrons?
Argon
Figure out the number of electrons for each level for IRON
2) 8) 16)
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
What subatomic particle is not inside the nucleus?
Electrons
What element has the elemental symbol Yb?
Ytterbium
What element is a solid named after a state with 253 neutrons?
Californium
What does the electron configuration of an element reveal about that element?
How the electrons are arranged in an atom.