Periodic Table
What number tells you the number of protons and electrons?
Atomic Number
What is the 'brain' of the atom?
Nucleus
What is the name of element number 1?
Hydrogen
the attractive force that holds atoms or ions together
Chemical Bonds
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
Magnesium Chloride bond type
Ionic Bond
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
bond formed by the sharing of electrons between atoms; usually between two nonmetals
Covalent Bonds
This is the number of electrons many atoms have on their outer shells to be stable
8
What particle has a negative charge?
Electron
Which element has 42 as its atomic number?
Mo, Molybdenum
Electrons in the outermost energy level of an atom
Valence Electrons
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
a covalent bond in which electrons are not shared equally
Polar Covalent Bond
This is the group on the periodic table that does not react with other elements. They are considered stable.
Noble Gases