Electron conf.
How many electrons does the p orbital fill
6 electrons
what’s the charge of protons neutrons and electrons
Proton +
neutron no charge
electron -
Octet rule
Atoms tend to gain lose or share electrons in order to attain 8 valence electrons
Whats NaCl
Salt
What is the mole
A counting unit
• Similar to a dozen in that it is
always the same number, except
instead of 12, it’s 602 billion trillion
602,000,000,000,000,000,000,0
How does the p orbital look
dumbell shape
How much electrons can the second energy level hold
8
Shielding effect
when inner-shell electrons block or "shield" outer-shell (valence) electrons from the full positive charge of the nucleus, reducing the electrostatic attraction felt by the outer electrons
What are ionic compounds
– Made up of two or more ions that are attracted
because of their opposite charge
Non metal + metal
1. Number of atoms in 0.500 mole of Al
a) 500 Al atoms
b) 6.02 x 1023 Al atoms
c) 3.01 x 1023 Al atoms
B
i think
What are exceptional configuraions (name 2 elemens)
Chromium, copper (anything in groups 6 & 11)
True or false:
electrons orbit the nucleus
false
What are positive ions called
what are negative ions called
positive cations
negative anions
What are covalent compounds
– Molecules
– Electrons are shared in bond
2.Number of moles of S in 1.8 x 1024 S atoms
a) 1.0 mole S atoms
b) 3.0 mole S atoms
c) 1.1 x 1048 mole S atom
B
What’s the excited state
When electrons are found in higher orbital would be expected when following the orbital filling diagram
Gold foil experiment
Rutherford fired positively charged alpha particles at a thin sheet of gold foil 1 In 10k deflected
What’s electronegativy
• Electronegativity reflects an atoms ability
to attract an electron in a chemical bond.
Increases up and right on periodic table
True or false:
‘when naming a compound, u put the positively charged first
True
How many atoms of Cu are
present in 35.4 g of Cu?
1 mol Cu 6.02 X 1023 atoms Cu
63.5 g Cu 1 mol Cu
= 3.4 X 1023 atoms Cu
What’s the electron configuration for chromium (element 25
1s2 2s2 2p6 3s2 3p6 4s1 3d5
Describe Bohr model
Ya your right
True or false:
non metals tend to lose electrons during reactions
false
they tend to gain because of their smaller atomic size ( I think)
Write the following:
Iron (ll) Chloride
Iron (lll) chloride
FeCl2 = Iron II Chloride
FeCl3 = Iron III Chloride
This is bc they r transition metals
How many liters of O2 are present in 40.0
g of O2?
lol im sry
40.0 g O2 1 mol O2 22.4 L O2
32.0 g O2 1 mol O2
answer: 28.0 L of O2