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- 1Periodic Table- Horizontal rows = periods (7)
- Vertical column = groups (18) - 2Particles of THE ATOM1 atomic mass unit (amu) = 1.6605 x 10 E-24 g
- 3Radioactive DecayA process = forms unstable composition
undergoes disintegration
loss of one or more fundamental particles - 4Atomic NumberNumber of protons in nucleus
- 5Neutronthe number of neutrons
- 6Mass numberNumber of protons + Number of neutrons
- 7IsotopeSame element but different number of neutrons
- 8Example isotope35Cl
17 - 9Isotopes weightIsotopes averaged in proportion to their abundance
atomic weight = [75.77/100 x 34.97] + [24.33/100 x 36.97] - 10ElectronsThe negative electrons are found to be surrounding the nucleus and protons
- 11Principle quantum number (n)the shells are number 1,2,3,4... from lowest energy to highest the numbers are called PQN
shell become larger hold more electrons - 12Reactivityhigher up the energy shell less close to the nucleus
- 13Quantumelectrons to move to higher energy shell specific amount of energy required
- 14EmitElectrons jumping down to lower shell a quantum of energy (light)
- 15Quantum mechanicsbased on energy only comes in fixed amounts or quanta
- 16Quantum mechanics 2everything thought as a particle or wave
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- Fichas sobre Sin título, creado por deebanerji el 13/12/2013.
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