Protons/Neutrons/Electrons
How do you find number of neutrons?
Atomic mass - atomic number (or # of protons)
Which Bond involves SHARING of electrons?
Covalent bonds
How many electrons fit in the FIRST shell?
2
Draw a Bohr model for Fluorine.
2e- 7e-
9 p+
10N
9e-
What is the MASS of Lithium? (watch your rounding!)
6.9 -> 7
Which Bond involves donating and receiving electrons?
Ionic bonds
How many electrons fit into the SECOND shell?
8
Draw a Bohr Model for Hydrogen
p+1
N0
e-1
If there are 10 protons (+) in an atom, how many electrons (-) are there?
10
How many neutrons are in Nitrogen?
14 - 7 = 7 neutrons
What are the numbers for full shells after bonding?
2, 8, 18
What is the electron configuration for Carbon
2e- 4e-
Draw a covalent bond for water (H2O)
O will have 2e- on inner shell and 8e- on outer shell
What parts of the atom are located in the nucleus?
Protons and neutrons
How many neutrons are in Na (Sodium)
22.9 -> 23 - 11 = 12 neutrons
Will NaCl be a covalent or ionic bond?
Ionic - Na will donate 1 electron to Cl
How many shells will Magnesium use?
3 (2e-, 8e-, 2e-)
Draw the ionic bond of Be and O
Be donates 2 electrons to O
The atomic number on the periodic table tells you the amount of _______?
protons
How many protons, neutrons, and electrons are in Oxygen?
8 protons
8 neutrons
8 electrons
How many covalent bonds are needed for CH4
4
In an ionic bond between Sodium (Na) and Chlorine (Cl), which atom will donate an electron, and which will receive and electron?
Chlorine will receive 1 electron from Sodium so Chlorine will have 8 on the outer shell and Sodium will have 8 on the outer shell.
Draw the ionic bond for O Mg
Mg donates 2e- to O