Transition work Flashcards
What does an atom consist of
A nucleus containing protons and neutrons surrounded by electrons
What are the relative masses of a proton neutron and electron
1,1 and 1/1840
What are the relative charges of a proton neutron and electron
+1,0,-1
How do the number of protons and electrons differ in an atom
They are the same because atoms have neutral charge
What force holds an atomic nucleus together
Strong nuclear force
What is the atomic number of an element
The numbers of protons in the nucleus of a single atom of an element
What is the mass number of an element
Number of protons and neutrons
What is an isotope
An atom with the same number of protons and neutrons
What is an ion
An atom or group of atoms with a charge
What’s the function of a mass spectrometer
Accurately determines mass abs abundance of separate atoms or molecules
What is a mass spectrum
The output from a mass spectrometer that shows the different isotopes that make up an element
What is the total number of electrons can the first three shells hold
2 on the first, 8 on the second and 18 on the third
What are the first four electrons sub shells called
S,p,d,f
How many electrons can each orbital hold
A maximum of 2 electrons
What is ionisation energy and its unit
The energy it take to remove one mole of electron from a mole of electrons from a mole of atoms in the gaseous state
Unit = Kj mol-1
