Electrons & Periodic Table Review



Chapter 4 Review – Arrangement of Electrons KEYSOLVE THE FOLLOWING LIGHT & ENERGY PROBLEMS:Find the energy of an infrared photon whose frequency is 2.0 1012 Hz. 1.3 x 10-21 J What is the wavelength of a red light wave whose frequency is 4.3 1014 Hz? 7.0 x 10-7 mCalculate the frequency of an X-ray wave that has a wavelength of 9.2 nm. 3.3 x 1016 HzWhat is the energy of a cosmic ray photon whose wavelength is 2.0 pm? 9.9 x 10-14 JFind the frequency of a microwave that carries 3.4 10-25 J of energy. 5.1 x 108 HzNAME THE TERM DESCRIBED BY THE FOLLOWING DEFINITIONS: Word Bank: Anion AufbauCationExcitedGround PhotonValence Heisenburg Uncertainty Hund’s (rule) Principle Pauli Exclusion Principle_________________________A packet of light energy that carries a quantum of energy._________________________The state when all electrons of an atom are in the lowest possible energy levels._________________________When an electron jumps up to a higher energy level, the atom is in its ___. _________________________The theory that it is impossible to know both the position and speed of an electron simultaneously.__________________________The theory that no two electrons in an atom can share the same 4 quantum numbers.__________________________The theory that electrons fill the lowest energy orbitals first.__________________________The theory that, within a sublevel, electrons prefer to occupy their own orbital.__________________________A term describing the outermost electrons in an atom.____________________________ , ______________________ Chapter 3 & 22A positively charged ion is called a(n) ___. A negatively charged ion is called a(n) ___.DRAW ORBITAL DIAGRAMS FOR THE FOLLOWING ELEMENTS: (LINES & ARROWS)MgSiTiWRITE LONGHAND ELECTRON CONFIGURATIONS FOR THE FOLLOWING ELEMENTS:NKCrWRITE SHORTHAND ELECTRON CONFIGURATIONS FOR THE FOLLOWING ELEMENTS:SbBiTcGeWRITE THE ION SYMBOL AND ITS SHORTHAND ELECTRON CONFIGURATION:ElementIon(Charge)Shorthand Electron ConfigurationTeTe -2[Kr] 5s2 4d10 5p6 -2BB +3BaBa +2BrBr -1KK +1What three principles guide the electron configuration of an atom? (Briefly explain)1) Pauli Exclusion Principle - 2) Aufbau’s Principle - 3) Hund’s (Rule) Principle - What is an octet of electron? __________________________________________Which elements contain an octet of electrons? ___________________________Identify the elements having the following electron configurations?Answers (in alphabetical order): Argon, Arsenic, Potassium & Silicon a) 1s22s22p63s23p6 = _______________________ b) [Ar] 4s1 = ___________________ c) contains four electrons in its third and outer main energy level = _____________ d) contains one set of paired and three unpaired electrons in its fourth and outer main energy level = ______________________Which has a longer wavelength, green or yellow light? ________________________Which has a higher frequencies, an X ray or a microwave? ____________________Which travels at a greater speed, ultraviolet or infrared light? ___________________Quantum Number: Symbols, meanings, how they narrow down the address of an electronSymbolName of Quantum #Description‘n‘lmlmsCircle the radiation with the lowest frequency? a. gamma rays b. x rays c. blue light d. red light e. radio wavesCircle the radiation with the shortest wavelength?a. gamma rays b. x rays c. blue light d. red light e. radio wavesRank the following regions of the electromagnetic spectrum in order of increasing energy. Xrays, microwaves, infrared, ultraviolet, visible(least energetic) (most energetic)Which of the following sets of quantum numbers is NOT permissible? ANSWER: Possible = 3, Not possible = 2 a. n = 1, l = 0, ml = 0, ms = + 1/2 Possible or Not Possible b. n = 4, l = 0, ml = 0, ms = + 1/2 Possible or Not Possible c. n = 3, l = 3, ml = -3, ms = - 1/2 Possible or Not Possible d. n = 2, l = 1, ml = 1, ms = - 1/2 Possible or Not Possible e. n = 2, l = 1, ml = 2, ms = + 1/2 Possible or Not PossibleWord bank for #37 thru #42 (in alphabetical order): DiffractionInterference Quanta Wave Wavelength 3x108 m/sThe frequency of a light wave is inversely proportional to its ____________________Light moves at a constant speed of _______________________________.The bending of a wave as it passes by the edge of an object is called ______________When waves overlap each other, ________________________ occurs.Planck proposed that energy is emitted or absorbed by any object in fixed amounts called _______________Light is said to have properties of both particles and _______________.How are colors created in a line-emission spectrum?Studying for Chapter 4 TestRead over your notes and rework your homework assignments. You will be given the E=hv and c= v formula and the periodic table. You will do AWESOME on the test if you do the following things.Electron ConfigurationUsing the periodic table: Draw the orbital notation (arrows). Write the longhand and shorthand (noble gas) electron configurations Write the ion symbol and electron configurations of an ion.Explain the following concepts: How stability leads to exceptions in the electron configurations of Cu and Cr. Know the difference between energy levels, sublevels, and orbitals? Absorption Spectra & Emission Spectra – what are they?Know the meaning of the following terms: Aufbau PrincipleHund’s RuleValence (Outer) Electrons Unpaired Electrons PhotonCore (Inner) Electrons Ground StateExcited StateHeisenburg Uncertainty Principle OrbitalPauli Exclusion Principle ................
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