WorksheetsAtomic Structure (Atomic Number, Groups, Periods)
Total questions: 20
Worksheet time: 12mins
What is the atomic number?
the number of protons in the nucleus
the number of protons and neutrons in the nucleus
the number of neutrons in the nucleus
the number of protons in the energy levels
What is the atomic number of this atom?
1
3
4
7
How many electrons does this atom have?
2
4
6
10
What mass does a neutron have?
1 amu
0 amu
-1 amu
+2 amu
What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.
cell
nucleus
atom
electron
What is a subatomic particle with a positive charge that is in the nucleus of an atom?
neutron
proton
electron
valence electron
What is a subatomic particle without an electric charge, located in the nucleus of an atom?
neutron
proton
electron
valence electron
What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.
neutron
proton
electron
electron cloud
How many protons does indium have?
49
66
114
115
What is the atomic mass of barium
56
82
137
138
How many electrons does sulfur have
16
32
48
12
How many protons does sulfur have?
32
16
48
12
What is a group on the periodic table?
Bottom rows of the table
Up and down column on the table
Side to side row on table
Side to side column on the table
What is a period on the periodic table?
the drop down rows of the table
Up and down column on the table
Side to side row on table
the left side of the table
What group is carbon in?
1
2
13
14
15
Which element is found in group 2, period 6?
Oxygen (O)
Barium (Ba)
Selenium (Se)
Carbon (C)
Which of the following atomic symbol for bromine is written correctly?
bR
BR
Br
br
Label the atom
negative
positive
neutral
Zirconium has how many Protons?
