valence electrons
Group 1 elements have how many valence electrons
what is 1?
the molecular geometry of water (H2O)
bent
covalent bonds do what ?
they share electrons
the first energy level has how many orbitals?
1
according to the periodic table, what is the trend for electronegativity?
as you go across the periodic table, electronegativity increases; as you go down the periodic table electronegativity decreases.
definition of valence electrons
what is the electrons in the highest energy level ?
the molecular geometry of CH4
tetrahedral
ionic bonds do what?
they give/take electrons
the 3rd energy level have how many orbitals?
3
define the term "electronegativity"
an atom only has 2 valence electrons, would it rather give them away or keep them?
what is give them away
The molecular geometry of NH3
trigonal pyramidal
how many electrons are being shared in a triple bond?
6
if an atom has 11 electrons, how many energy levels will be in this atom?
3
in H2O, the electrons are being attracted to which atom (Element) ?
the oxygen atoms
Describe what it means for an atom to have an octet?
to have 8 electrons in their valence shell
molecular Geometry of CO2
Linear
triple bonds have how many pi bonds?
2
how many electrons can the 2nd energy level hold?
8
define the term "dipole moment"
a molecule experiencing two charges at the same time. Positive and negative
the noble gases have how many valence electrons?
8
Molecular Geometry of BF3
Trigonal planar
CO2 molecule is held together by what type of bonds?
covalent bonds
name the energy levels (1-4) and their orbitals.
1s,
2s,2p,
3s,3p,3d
4s,4p,4d,4f
+-----> what does this symbol mean?
that there is a slightly positive end and the electrons are moving towards the more electronegative atom