Chemistry equations Flashcards
1
Q
Formal charge
A
FC = valance electrons - 1/2bonding-lone pairs
2
Q
Electromagnetic radiation energy
A
E =h x f
3
Q
Planks constant
A
6.63 x 10^-34 J/s
4
Q
Speed of light
A
3 x 10^8 m/s
5
Q
Energy of a photon
A
E = hc/λ h = Planks constant c = speed of lght λ = wavelength
6
Q
Energy emitted or absorbed moving between shells
A
ΔE = R(1/n^2 - 1/n^2) R = 2.18 x 10^-18 J
7
Q
Avagadro’s number (a mole)
A
6.022 x 10^23
