20 questions
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
What is the mass 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 and electrons in the atom
What does the 6 represent?
Atomic mass
atomic number
chemical symbol
element name
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
20
10
35
25
Which of the following determines the identity of an element?
number of protons
atomic mass
number of neutrons
number of shells
How many protons does indium have?
49
66
114
115