Chapter 2: Atomic structure and the periodic table Flashcards
What is the force that keeps an atom together?
Electrostatic force
What is electrostatic force?
The attraction between objects of opposing charge
What is a charged atom called?
An ion
What is an isotope?
An isotope is an atom with variable number of neutrons but the same number of protons
How many energy levels are there?
7
How many sublevels are there?
4- s, p, d and f
What is Aufbau principle?
The electrons have to be placed in first level of each one before adding the other
Pauli exclusion principle?
Orbitals can only contain 2 electrons at the same time
In what direction does atomic radius increase?
Down and to the left
In what direction does ionisation energy increase?
Up and to the right
In what direction does electronegativity increase?
Up and to the right
What forms a acidic oxide?
Oxygen and non-metal
What forms basic oxides?
Oxygen and metals
