Atomic Structure
Calculate That
Vocab
Random
Light
100
Which two particles are located in the nucleus of an atom have a mass of 1 amu
Proton and Neutron
100
What is the number of protons for an element with an electron configuration of 2-8-6
16
100
Atomic number is the measure of this subatomic particle
Protons
100
All atoms of chlorine should have the same ___________
Protons
100
What element is the unknown?
L
200
Describe the structure of the atom contains a ___________ nucleus surrounded by negatively charged ______________.
Positive
Electrons
200
What is the mass number of a particle that has 10 electrons, 9 protons, and 11 neutrons
20
200
All atoms are considered electrically neutral because the number of _____________ = Number of ___________
P = E
200
Give the ground state configuration for Aluminum
2-8-3
200
What is one possible excited state configuration for fluorine?
2-6-1, 1-8
300
Give the charges of each subatomic particle: proton, neutron and electron
P+, N neutral, E-
300
What is the number of protons and neutrons in C-14
6 P, 8 N
300
In terms of protons and neutrons, how come C-12 and C-14 are isotopes of each other
Same number protons, different number neutrons
300
C-12 and C-14 are isotopes of each other. Write the Isotopic Notation for the heavier isotope.
14
C
6
300
Compare the energy of an electron in the 4th shell of an atom to the energy of an electron in the 2nd shell of the same atom.
4th has more energy than 2nd
400
According to the wave mechanical model of an atom, an orbital is an area around the nucleus that contains this subatomic particle.
Electron
400
What is the charge of a particle with 12 protons, 10 electrons and 13 neutrons?
+2
400
What is average atomic mass?
weighted average of naturally occuring isotopes
400
What evidence can be used to prove a green firework is made from Copper?
Flame Test and Emission spectra
400
Explain why the electron configuration of 2-8-6-1 represents a chlorine atom in an excited state
Ground state is 2-8-7 and one electron moved to the 4th energy level
500
State the two conclusions from rutherford's gold foil experiment.
An atom is mostly empty space and an atom has a small dense positive nucleus
500
The element boron has two natural isotopes: Boron-10 (mass = 10.0129 amu, abundance = 19.90%) and Boron-11 (mass = 11.0093 amu, abundance = 80.10%). What is the average atomic mass of boron?
10.81
500
How come ions have a charge?
number of electrons were lost or gained
500
What particle from the electromagnetic spectrum has the lowest energy?
Radio
500
Explain in terms of electrons and energy states how light is produced.
Light is produced when excited electrons move back to the ground state and release energy.