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WorksheetsPeriodic Table Questions
Total questions: 15
Worksheet time: 15mins
A chemist is identifying the elements found in a sample of pond water. What characteristic of an element's atoms always determines the identity of the element?
Number of protons
Number of neutrons
Location of valence electrons
Number of valence electrons
How many valence electrons are in an atom of each element in Group 13 in the Periodic Table?
13
3
10
5
What is the mass number of a carbon (C) atom that has 8 neutrons?
12
12.011
14
14.011
An atom has 82 protons, 125 neutrons, and 82 electrons. What is the charge of the atom's cloud?
+82
-82
+125
0
Which element is found in Group 2, period 2 of the periodic table?
boron
barium
beryllium
bismuth
Which element has an atomic mass of 20?
neon
nickel
nitrogen
sodium
Which of the following elements is the least reactive?
bromine
chlorine
fluorine
iodine
How many neutrons are there in an atom of potassium?
19
20
39
58
Which of the following elements will not form positive ions when it reacts?
chlorine
lithium
magnesium
silver
Copper exists naturally as two isotopes, 63Cu and 65Cu. The abundance of 63Cu is 69% and the abundance of 65Cu is 31%. What is the relative atomic mass of copper to 3 significant figures?
63.3
63.6
64.3
64.4
How many electrons are required to fill the second energy level (shell) of an atom?
2
6
8
10
Elements are arranged in the Periodic Table based on their properties in a particular order. Which of the following correctly identifies the period and group of the elements listed? (8.5C)
Which element is represented by the symbol 'K' on the Periodic Table?
Potassium
Krypton
Kobalt
Kadmium
What is the atomic number of Oxygen?
6
7
8
9
Which of the following elements is a noble gas?
Helium
Hydrogen
Nitrogen
Oxygen
