Sotope sotope Isotope Symbols Mass A ( of protons + of neutrons) Number- same protons different neutrons Element Q:3H,14C,31P,238U Atomic Number (#t of protons) the use of isotopes in science/technology neutron 05,73011,46017,19022,92028,650 Nuclear power plant Archaeology 11
Isotope Isotope same protons, different neutrons Q: 3H, 14C, 31P, 238U the use of isotopes in science/technology Nuclear power plant Archaeology 11
Wave-Particle Duality Any material(e.g. light, electron)is both a particle and a wave Wave function( ), and probability density Energy of a wave
Wave-Particle Duality Any material (e.g. light, electron) is both a particle and a wave. Wave function (ψ), and probability density Energy of a wave 12
Electron cloud Electron cloud The uncertainty principle:△x*△p>h/2T EXample: why position and momentum cannot be accurately measured? Electron cloud: a region where electrons are likely to be found 。 Atomic orbita
Electron Cloud Electron cloud The uncertainty principle: Δx * Δp > h/2π Example: why position and momentum cannot be accurately measured? Electron cloud: a region where electrons are likely to be found. Atomic orbital 13
Atomic Orbitals 1sm=0 2 p m m-0 3dm-2 3 m=1 3dm-0 4f 3 m=1
Atomic Orbitals 14
Electron Configuration 。 Atomic orbita|ls the probability of an electron's position and energy 4 Quantum numbers n (Principal): 1, 2, 3, 4, ■|( Angular momentun):0,1,2,3,…,n-1 s(=0),p(=1),d(=2),f(=3) m( Magnetic):0,±1,±2,…,士 ms(Spin):±1/2
Electron Configuration Atomic orbitals the probability of an electron's position and energy 4 Quantum numbers n (Principal): 1, 2, 3, 4, … l (Angular momentum): 0, 1, 2, 3, …, n-1 s (l = 0), p (l = 1), d (l = 2), f (l = 3), … m (Magnetic): 0, ±1, ±2, …, ±l ms (Spin): ±1/2 15