WorksheetsAtoms, Elements & Ions
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
Which is NOT a subatomic particle?
a)
Proton
b)
Neutron
c)
Isotope
d)
Electron
2.
The atomic number is equal to the number of _____________ in an atom.
a)
Neutrons
b)
Protons
c)
Isotope
d)
Mass Number
3.
How many valence electrons are in all alkaline earth metals?
a)
2
b)
3
c)
4
d)
1
4.
An isotope is defined as having the same number of protons, but different number of ____________.
a)
Electrons
b)
Neutrons
c)
Protons
d)
Quarks
5.
Atoms that have a filled outer main energy level are said to have?
a)
Octet
b)
Energy
c)
Low mass
d)
Dot symbol
6.
Elements that are different chemical species, but have the same electron configuration are?
a)
Electrically neutral
b)
Ions
c)
Isoelectronic
d)
Isotopes
7.
Which is the correct order of filling an electron configuration?
a)
1s, 2s, 2p, 3p,4s, 4d, 5s
b)
2s, 2p, 3s, 4s, 1s, 3p.3d
c)
1s, 2s, 2p, 3s, 3p, 3d, 4s
d)
1s, 2s, 2p, 3s, 3p, 4s, 3d
8.
An element that has lost or gained electrons is called an?
a)
Isotope
b)
Ion
c)
Allotrope
d)
Octet
9.
What is the correct electron configuration for nitrogen.
a)
1s2, 2s3, 2p2
b)
1s2, 2s1, 3s2, 2p7
c)
1s2, 2s2, 2p3
d)
1s2,2s2,3p3
10.
Electrons that are located in the highest main energy level, that can be lost, gained or shared are called?
a)
Octet electrons
b)
Valence electrons
c)
Happy electrons
d)
Inner shell electrons
100 %
