Discuss the relationship between the number of protons and the number of electro

Question

Discuss the relationship between the number of protons and the number of electrons in a panicle that has a charge of Mathematically determine the average atomic mass of oxygen. There are three naturally occurring isotopes: 8O16 having a natural abundance of 99.759% and a weight of 15.995, and 8O18 with a natural abundance of 0.037% and a weight of 16.995. and 8O18 with a natural abundance of 0.204% and a weight of 17.999 Write electron configurations and electron distributions for the following elements:

Explanation / Answer

1)The particle that has a charge of -1 has one electron more than the no.of protons present as the particle is negatively charged ( -1 charge ) .

2) Average atomic mass of oxygen = (0.99759*15.995)+(0.00037*16.995)+(0.00204*17.999)=15.99994 = 16 amu
3) a. element with atomic mass 10 is Boron
   Electron configuration: [He] 2s2 2p1 ; 1s2 2s2 2p1
   b. element with an atomic number of 16 is sulfur
   Electron configuration : 1s2 2s2 2p6 3s2 3p4
   c. An isotope of oxygen : oxygen -17
   Electron config : 1s2 2s2 2p4
   d. alkali metal in period 4 : Potassium
   electron config: 1s2 2s2 2p6 3s2 3p6 4s1
   e. halogen in period 3 : Chlorine
   electronic config: 1s2 2s2 2p6 3s2 3p5

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