Subatomic Particles
The nucleus of an atom has an overall _______ charge.
Positive
Which of the following is NOT a metal?
a. Potassium
b. Mercury
c. Iodine
d. Titanium
c. Iodine
Argon (Ar) has how many valence electrons?
8
What are the 4 different letters that represent the 4 different orbitals?
s, p, d, f
If an atom has more protons than electrons, the overall charge would be ____________
Positive
To find the atomic mass, simply add ________ and ________!
Protons and Neutrons
Name 3 elements in the 2nd periodic group/family
Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
How many VALENCE ELECTRONS are in the following element:
1s22s22p63s23p3
Phosphorus
Which of the following electron shells is always filled first?
a. p-orbital
b. s-orbital
c. f-orbital
d. d-orbital
b. s-orbital
What is the overall charge of an atom of Bromine (Br) that has 36 electrons?
-1
An atom of Gold (Au) has _______ protons
79 protons
If an element can be easily removed from an atom, that atom has a low _____________.
Ionization Energy
How many electrons are in a cation of Copper2+ (Cu2+)?
27 electrons
Why are electrons sometimes drawn as arrows pointing in opposite directions?
The electrons spin in opposite directions when paired up
How many neutrons are in an atom of Uranium-238 (U-238)?
146 Neutrons
The atomic number of an element is always equal to the number of __________ in that atom.
Protons
Which of the following elements is the largest?
a. Aluminum
b. Boron
c. Nitrogen
d. Carbon
a. Aluminum
True or False:
Electrons release light energy when they jump from a low energy level to a higher energy level.
False
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3
Arsenic (As)
For two atoms to be isotopes of each other, they must have the same number of _____________.
Protons
Draw a Lewis Dot Diagram for the following neutral element
Nitrogen (N)
N with 5 dots around it
Which of the following elements has the highest electronegativity?
a. Chlorine
b. Oxygen
c. Neon
d. Fluorine
d. Fluorine
According to Bohr's model, which energy level jump would result in the lowest wavelength of light?
a. n=3 --> n=1
b. n=5 --> n=2
c. n=2 --> n=1
d. n=5 --> n=4
d. n=5 --> n=4
Write the electron configuration for the following element:
Uranium (U)
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f3 6s2 6p6 6d1 7s2
[Rn] 5f3 6d1 7s2
If an atom of Sulfur (S) has a full outer valence electron shell, what would be its overall charge?
-2