Atoms Flashcards
1
Q
What are degenerate orbitals?
A
Orbitals of the same energy
2
Q
Quantisized
A
The energy of the electrons is limited to specific values
3
Q
Why is the shape of the electron important?
A
- Occupy 3 dimensions
- Calculated mathematically
- Region you are most likely to find an electron
4
Q
What is relative atomic mass (RAM)?
A
Based on the element’s isotopes and the relative abundance of those isotopes ( how much of each occurs in nature)
5
Q
What is an isotope?
A
Atoms of an element with the same number of protons but varying numbers of neutrons, and thus have varying masses.
6
Q
What is the nucleus?
A
- Where them ads of the atom is concentrated
- Contains nucleons
- Positively charged
- Held together by a strong nuclear force
7
Q
What are the main sub- atomic particles?
A
- Protons
- Neutrons
- Electrons
8
Q
What is the value of a.m.u?
A
1.66 x 10^-27
9
Q
What is the carbon -12 atom?
A
The standard mass against which all other elements are measured
