Atomic Structure Flashcards
Materials having no unpaired electrons, being slightly repelled by a magnetic field
Diamagnetic materials
Materials that have unpaired electrons causing a magnetic field to align the spins of the electrons and to weakly attract the atom to the field.
Paramagnetic materials
What are the valence electrons for the transition elements
Outermost s subshell
Next to outermost d subshell
What are the valence electrons of the inner transition elements
Outermost s subshell
Next to outermost d subshell
2 levels below outermost f subshell
How many valence electrons does Fe have
8
What are the valence electrons for elements 3A to 8A?
Outermost s electrons
Outermost p electrons
What are the valence electrons for 1A and 2A elements?
Outermost s orbital
Beyond period 2 they might accept electrons into their empty d orbitals
How many valence electrons are in Selenium
6
How many valence electrons are in sulfur in a sulphate ion
12
Different isotopes of one element have different numbers of _______ but the same number of ________.
Neutrons , protons
Avagadros number ?
6.02 x10^23
If one atom of nitrogen has a mass of 14u, then one mole of nitrogen has a mass of ___g?
14
The name of the energy emitted as electromagnetic radiation from matter in discrete bundles
Quanta
Angular momentum equation?
L=mvr
Kinetic energy equation ?
Mv^2/2