Answer the following questions about quantum numbers and electron configurations. a) Identify the sublevels with the following combinations of quantum numbers and arrange then in order of increasing energy in an atom of Sg (Seaborgium, element 106)
n = 4,1 = 3 n=2,1 = 1 n=6,1 = 2 n= 7,1 = 0
b) Draw the orbital filling diagram for an atom of Sn and identify the valence electrons in the diagram.
c) Tin forms two stable ions, Sn² and Sn" Draw the orbital filling diagrams for the two ions of tin and explain how you decided which electrons were involved in the formation of the ions.
d) Is it possible for a neutral atom with an even number of electrons to have any unpaired electrons? Explain and provide an example with an orbital filling diagram to support your claim.

the answer is d.) potassium

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.