Chemistry Unit Two
The atomic mass for cadmium is
112.41
How many electrons are in each neutral atom of magnesium.
12
an atom of ^25Mg contains how many protons
12
How many protons and neutrons are in an atom of calcium-46
20 protons, 26 neutrons
How many protons are in nickel
28
How many neutrons are in Manganese-54
29
predict the charge that aluminum ion would have
3+
predict the charge that an an ion formed from Nitrogen would have.
3-
How many electrons does the As^3- ion possess
36
How many electrons does the Se^2- ion possess
36
The atomic number of an atom of ^130Xe is
54.
an atom of ^13C contains how many protons
6
How many protons and neutrons are in an atom of 227 89 Ac
89 Protons, 138 neutrons
Silver
Ag
protons=47, neutrons=62, electrons=46
Ag^+
Which of the following statements is false according to Daltons Atomic theory
An atom of nitrogen can be broken down into smaller particles the will still have the unique properties of nitrogen.
What is the chemical symbol for Carbon
C
Identify the equipment that Thomson utilized to do his research
Cathode Ray Tube
protons=17, neutrons=18, electrons=18
Cl^-
Give the symbol for potassium
K
protons=12, neutrons=14, electrons=10
Mg^2+
What is the chemical symbol for molybdenum
Mo
Identify the discovery that Millikan made
The charge of a single electron
What is the chemical symbol for Thallium
Tl
An ion has 26 protons, 29 neutrons, and 23 electrons. The symbol for the ion is
^55Fe^3+
Identify an anion.
an atom that has gained an electron
Identify a cation
an atom that has lost an electron
An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has
an atomic number of 38 and a mass number of 86
Identify the discovery that Thomson made
an electron
80 X 35
bromine
protons, neutrons, electrons= 20
calcium
protons=17, neutrons=20, electrons=17
chlorine
What does "X" stand for in the following symbol 65 X 29
copper
The atomic number is equal to
number of protons
Identify the equipment that Millikan utilized to do his research
oil atomizer, light source, microscope
Identify the description of an atom
protons and neutrons in nucleus; electrons in orbitals
25 X 12
protons=12, neutrons=13, electrons=12
40 X 18
protons=18, nitrogen=22, electrons=18
65 X 29
protons=29, neutrons=36, electrons=29
Which element has the chemical symbol, Rn
radon
28 X 14
silicon
protons=11, neutrons=12, electrons=11
sodium
The mass of a number is equal to
sum of the number of protons and neutrons
ions differ in
the number of electrons
Which element has the chemical symbol, Sn
tin
Identify the element that has the atomic number of 40
zirconium
