S block Top left two 1A-2A D block Middle 3A-12A P block 13A-18A F block entire bottom 19A -32A Z = Atomic number = number of protons A= The mass number = the protons + the nutrons The electron capacity of the (Electron configuration) 1st shell= 2 Electrons 2nd shell= 8 Electrons 3rd shell= 18 Electron 4th shell= 32 Electrons 5th shell = 50 Electrons S subshell all = 2 P subshell all = 6 D subshell all = 10 F subshell all = 14 Periods = Left to right Groups =Top to Bottom Charataristics of a proton Charge + 1 Located inside the nucleus Approximate mass 1 amu Which type of radioactive partical Does not carry a charged partical? Gamma Rays Valance electrons left to right 1 2 4 5 6 7 8 8 3 3 3 3 3 3 3 Divid the %'s' by 100 the multiply by the masses than add the products togther (round to nearth tenth) (make sure to add amu to the end) Which element is most likly to have chemical properties similar to those of Calcium? To answer questions like this look for elements in the same rows above or below What is the main disadvantage of nucular fission reactors? The spent fuel rods are much more radioactive than the parent rods and thus needs to be stored for hunreds of years until they are safe to handle The mazimum number of electrons in any orbital is 2 (Hog hilton each box is an orbital) (up down arrow) An atom containing 28 protons,28 electrons and 31 neutrons has a mass number of? 59 (add protons and neutrons) 1s^2 2s^2 2p^6 3s^2 3p^4 Add the expotents Properties of Nonmetal -Dull -Brittle -Like to gain electrons -Poor conductor of heat and electricity Properites of Metal -Shiny -Like to gain electrons -Good conductors -Like to lose electrons Hlilton Pig Laws Cannot go up a floor before the whole floor is clear Hund's law Pigs go to other rooms on the same floor facing up beofre going upside down in the same room as another Pauli Law The pigs cannot be facing the same direction mega 10**6 0kilo 10**3 base 10**1 centi 10**-2 mili 10**-3 micro 10**-6 nano 10**-9 pico 10**-12 F=(C*9/5)+32 C=(F-32)/ 9/5 C=273-K K=C+273 Mass/Volume*Density sig figs 1-9 r sig figs 0s between non 0s r sig leading 0s r not sig trailing 0s to the right of the decimal r sig + or - round to the least sig- * or / exp()round to the least decimal