What are isotopes?
Atoms of the same element with different numbers of neutrons
Neutron's Charge is
Neutral
An atom has an atomic number of 9 and a mass number of 19. What are its numbers of protons, neutrons and electrons?
protons : 9, electrons : 9 and neutrons : 10
Electron's Location
Shell/orbit
Electrons mass
1/1840 AMU
How do you find the number of neutrons in an atom?
Mass-Atomic Number
Proton's Location
Nucleus
If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom?
35
An element has 36 protons, 36 electrons, and a mass of 84. How many neutrons does it have?
48
Electron's Charge
Negative
Proton's mass
1 AMU
If you know the atomic number, what other two things do you know?
number or protons and number of electrons
Nitrogen has 7 protons, and a mass number of 14 How many neutrons does it have?
7
The atomic number of an element is …
The number of protons
Neutron's mass
1 AMU
What element is this an atom of?
Lithium