DC3 Chemistry Revision Flashcards
1
Q
Atomic and mass no.
A
Atomic no is no of protons and electrons, mass no. Is number of protons and neutrons together
2
Q
Plum pudding model, sphere model, alpha scattering, Bohr model
A
JJ Thompson, John dalton, Rutherford, Niels Bohr
3
Q
Group 1 group 0 group 7 name
A
Alkali metals, noble gases, halogens
4
Q
How to find an rf value
A
Rf= Distance travelled by the substance
—————————————————. = solvent is baseline to top
Distance travelled by the solvent
5
Q
How many in outer shell of atom in group 3
A
3 electrons buddy
