4️⃣Protons, Neutrons, Electrons Flashcards
What are the names of the atoms sub atomic particles?
Protons, neutrons and electrons.
Where do the electrons live?
They live in shells, outside the nucleus
How are elements organised on the periodic table
By their atomic number
What is the top number on an element in the periodic table
The mass number
What is the bottom number on a element in the periodic table?
The atomic number
What is the number of protons the same as?
The number of electrons
What is a way to figure out the neutrons?
It is the mass number minus the number of protons
MASS - PROTONS = NEUTRONS
What is the atomic number?
The atomic number is the number of protons in the nucleus of an atom.
What is the mass number?
The mass number is the number of protons and neutrons in the nucleus of an atom.
PROTON
1. Relative charge?
2. Relative mass?
3. Where is it found?
- +1
- 1
- Nucleus
NEUTRON
1. Relative charge?
2. Relative mass?
3. Where is it found?
- 0
- 1
- Nucleus.
ELECTRON
1. Relative charge?
2. Relative mass?
3. Where is it found?
- -1
- 1/1840
- Shell orbiting the nucleus
EXAMPLE QUESTION
What is the electronic structure of Sulphur?
Hint : The mass number is 32 and the atomic number is 16
2, 8, 6
What is the maximum number of electrons that can be contained in…
1. First Shell?
2. Second shell and onwards?
- 2 electrons
- 8 electrons
EXAMPLE QUESTION
What is the electronic structure of Lithium?
Hint : The mass number is 7 and the atomic number is 3
2, 1
