WorksheetsLewis Dot + Mixed Review
Total questions: 50
Worksheet time: 2hrs 40mins
What is the correct Lewis Dot Structure for ammonia NH3
Which Lewis Dot Model drawing correctly shows an O2 molecule?
Why do carbon, silicon, and tin all react similarly?
They are located in the same period
They have an even atomic number
They have the same number of energy levels
They are located in the same group
What do Rb, Re, and I have in common?
family
number of energy levels
location of discovery
valence electrons
What is the valence electron count of the alkaline earth metal family?
-2
-1
2
1
The diagram below is the bohr model of an atom. Which best describes this atom?
it has a full outermost shell
it has 6 valence electrons
it has a positive charge
it has 6 electrons
What is the correct lewis dot diagram for Boron?
Which element is most similar to potassium (K)
argon
chlorine
phosphorus
sodium
By replacing the element symbol, this could be a diagram of which element?
Li
Al
C
Be
What is a cation?
a metal with a negative (-) charge that gains electrons
a non-metal with a negative (-) charge that loses electrons
a metal with a positive (+) charge that loses electrons
a non-metal with a positive (+) charge that loses electrons
What is a anion?
a metal with a negative (-) charge that loses electrons
a non-metal with a negative (-) charge that gains electrons
a metal with a positive (+) charge that gains electrons
a non-metal with a positive (+) charge that loses electrons
What is a valence electron?
electron found in a middle shell
electron found in outermost shell
electron found in innermost shell
electron not found in a shell
How many valence electrons are available for PO4 3-?
(a)
How many valence electrons are available for NBr3?
(a)
How many valence electrons are available for CH4?
(a)
How many valence electrons are available for HBr?
(a)
How many valence electrons are available for OF2?
(a)
How many valence electrons are available for F2?
(a)
What is the atomic number of carbon?
4
6
8
10
What is the atomic number of oxygen?
6
7
8
9
The atomic mass of Palladium (Pd) is 106.4. How many protons are in its nucleus?
106
46
60
Maybe 48.
I am an isotope of an atom with a mass number of 206. My nucleus contains 125 neutrons. Who am I?
lead
thallium (Tl)
bismuth (Bi)
mercury
Consider: 122Sb3-
Check all that apply.
122 neutrons
51 protons
54 electrons
48 electrons
71 neutrons
I. 7735X II. 7733X III. 8137X IV. 8135 X
How many moles of sodium chloride are in a 321.8 g sample? The molar mass of sodium chloride is 58.443 g/mol.
18810 moles
3.315 x 1024 moles
5.507 moles
4.767 moles
If you use of 0.672 moles of magnesium. How many liters of magnesium would you need in the graduated cylinder?
1 mole = 22.4 Liters
0.15L Mg
15.05L Mg
105L Mg
19.05L Mg
What is the configuration for Carbon?
1s2 2p2
1s2 2s2 2p2
1s1 1s2 2s2 2p2
Iron (Fe) configuration is
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p6 4s2
1s2 2s2 2p6 3s2 3p6 4s2 3d6
1s2 2s2 2p6 3s2 3p6 4s2 4d6
Which element is 1s2 2s2 2p6 3s2 3p6 4s2 3d7?
Cobalt
Nickel
Manganese
Chromium
Cl or Al?
N or C?
