CH 1. Para Vs. Diamagnetic/Quantum Numbers

CH 1.  Para Vs. Diamagnetic/Quantum Numbers      Name:

20 points

Short-hand notation:  use [noble gas before it], then:

s-block:  ns¹ or ns²

p-block:  ns²np ^1-6

d-block:  ns²(n-1)d^1-10

1.  Write the symbol and electron configuration notation for:

potassium

 carbon

manganese

tantalum

2.  Write the symbol and the shorthand notation for:

francium

platinum

lead

osmium

n = levels or periods = 1 thru 7

l = sublevels or blocks = s = 0, p = 1, d = 2, f = 3

m = rooms in the sublevel  s = 0, p = -1,0,+1, d = -2,-1,0,+1,+2, f = -3,-2,-1,0,+1,+2,+3

s = spin, either up +1/2 or down -1/2

3.  Draw the symbol and the last orbital box for these elements.  Then write the four quantum numbers for the last electron in that element:

beryllium

 lithium

nitrogen

molybdenum – it is a jumper!!!!

In a DIAMAGNETIC ELEMENT:  all of the electrons are spin-paired so their sub-shells are completely filled, causing them to be unaffected by magnetic fields

In a PARAMAGNETIC ELEMENT:  they are strongly affected by magnetic fields because their sub-shells are NOT completely filled with electrons.

4.  Which of the elements is diamagnetic?

5.  Which of the elements is paramagnetic?