IDENTIFY THE FOLLOWING ELEMENTS BASED ON THE ELECTRON CONFIGURATION:
A. 1S22S2SP5=
B. 1S22S22P63S1
C. 1S22S22P63S23P4
D. [Ne] 3S23P1
Thursday, September 15, 2011
Wednesday, August 31, 2011
Chem Blog 3
Naturally occurring boron is 80.20% boron 11(atomic mass 11.01 daltons) and 19.80% of some other isotope. What must the mass of the other isotope be in order to have an average atomic mass of 10.81 daltons?
Tuesday, August 23, 2011
Chemistry Blog 2
Element Z was recently discovered and has three different isotopes. Isotope 1 has a mass of 45 daltons and is found in nature 33% of the time. Isotope 2 has a mass of 46 daltons and is found in nature 57% of the time, and Isotope 3 is 48 daltons and is found in nature 10% of the time. What is the average atomic mass of element Z?
Thursday, August 18, 2011
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