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Introduction to the Periodic Table
Introduction to the Periodic Table
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An introduction to the periodic table
Flashcards
16 cards
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Questions
16
Answers
1
What does the atomic number tell you about an element?
The element's mass
The number of neutrons
The number of protons
The number of neutrinos
2
Potassium (K) is a(n)
alkali metal
metalloid
alkaline earth metal
transition metal
3
What are valence electrons?
The electrons in the first shell
The electrons closest to the nucleus
The electrons in the highest energy "shell"
The electrons with the lowest energy
4
Why is atomic mass not a whole number?
It is a weighted average mass of all the isotopes.
I have no idea.
Protons do not have an exact mass.
It usually is a whole number.
5
What element has the atomic number 82?
Na (sodium)
Sn (tin)
Pb (lead)
Kr (krypton)
6
How many valence electrons are in a magnesium (Mg) atom?
1
3
2
7
7
What is special about the noble gases?
They all have the same number of protons.
They all have the same number of electrons.
They are very stable.
They taste like apples.
8
How many electrons are in a calcium atom?
18
40.08
22
20
9
How many protons and neutrons are in lithium-7?
3 protons; 3 neutrons
3 protons; 4 neutrons
6.94 protons; zero neutrons
3 protons; Jimmy Neutron
10
When sulfur (S) makes an ion, what is the charge on the ion?
+2
-2
-1
+1
11
Lithium (Li) has a mass of 6.941 amu. Which isotope is more abundant, lithium-6 or lithium-7?
there is no way to tell
7
neither
6
12
Which list of elements are in the same period?
B, Si, As and Te
H, Li, Na and K
Sc, Ti, V and Cr
Li, Be, Na and Mg
13
Does calcium (Ca) gain or lose electrons to form an ion, and what is the charge on the ion?
Loses; +2
Gains; -2
Gains; +2
Loses; -2
14
What do we call columns on a periodic table?
Group or family
Lanthanides
Transition metals
Period
15
Two atoms are isotopes if they contain the same number of __ but a different number of __.
neutrons; protons
protons; neutrons
electrons; protons
electrons; neutrons
16
What is the charge on an aluminum ion?
+2
+1
-3
+3
