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periodic table
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Questions about elements based on their position in the periodic table.
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Questions
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Answers
1
What is the first element in period 3?
Ar
Li
Na
Sc
2
How many electrons does an atom of Lithium have?
3
4
2
7
3
Which element has 2 electrons in first energy level and 3 in the second energy level?
N - nitrogen
O - oxygen
B - borom
Be - Beryllium
4
What do elements in the same column have in common?
masses of their atoms
number of protons
size of their atoms
similar chemical properties
5
Elements in the periodic table are arranged by
alphabetical order
number of protons
atomic mass
date of discovery
6
Which of these elements is a Noble gas?
Oxygen
Helium
Hydrogen
Chlorine
7
Which of these is a metalloid?
Mg
As
Zn
P
8
How many neutrons are in an atom of Lithium?
7
10
4
3
9
Which element is in the same family as oxygen?
sulfur
phosphorus
nitrogen
helium
10
What is the classification of the element Neon (#10) ?
radioactive
metalloid
metal
nonmetal
11
What is the atomic number for element, carbon (C)?
18
7
6
12
12
What is the element symbol for sodium?
N
Na
Si
S
