Scientists
What did Thomson Discover?
The electron.
Which one is 3-D Orbits or Orbitals?
Orbitals. They are 3-Dimensional.
What is the letter that represents the principle quantum number?
n.
How many electrons per orbital?
2.
Every orbital in a sub shell is occupied by on electron before it can gain two is a statement from what rule?
Hund’s Rule.
Which scientist proposed if electrons had wave like properties?
De Broglie.
What shape is a p orbital?
A p orbital is dumbbell shaped.
What are the possible values for l if n=6?
l = 0,1,2,3,4,5.
What are the total number of orbitals permitted if n=2?
Total number is equal to n2 since n = 2 the number of orbitals is 22 which is equal to 4.
What are the three different ways electron configuration can be written?
1. Energy Level Diagrams
2. Complete Electron Configuration
3. Condensed Electron Configuration
State Heisenberg’s Uncertainty Principle.
Due to the wave like nature of matter it is impossible to predict both the position and momentum of an electron with certainty.
What year did Schrodinger replace Bohr‘s orbits with orbitals?
1926.
What are the possible values for l if n=6?
l = 0,1,2,3,4,5.
Which letter represents the orbital that has a clover like shape?
d. d orbitals have a clover like shape.
What is the condensed electron configuration of Hydrogen(H)
Hydrogen does not have a condensed form as there is no noble gas before it. So you would just use the non-condensed electron configuration of 1s1.
What is the limitation of Daltons theory?
It could not explain why atoms of elements combine the way they do.
What shape does a f orbital have?
The f orbital can have many different shapes but always has 7 orbitals.
What is the ml quantum number for a p orbital?
p orbital is l = 1. Therefore ml = -1,0,+1.
How many electrons are allowed in 14 orbitals?
There are 2 electrons allowed in each orbital so the number of electrons is 2(# of orbitals) so 2(14). Therefore 14 orbitals will have 28 electrons.
What is the electron configuration for a Calcium ion (Ca+2)?
1s22s22p63s23p6
What are the five main points in Daltons atomic theory and which ones have since been disproven?
1. Matter consists of tiny atoms. 2. Atoms are indestructible. 3.All atoms of one element are identical. 4. Atoms of different elements differ in mass and properties. 5. Atoms combine in whole number ratios. Numbers 2 and 3 have since been disproven. 2 is disproved as atomic reaction can destroy atoms and 3 is incorrect as isotopes exist.
In Bohrs orbits electrons are a fixed distance from the nucleus. Are they like this is orbitals?
No, electrons in orbitals are a variable distance from the nucleus.
For the principle quantum number n=4 is it possible for ml to equal 4?
No, this is not possible as ml = -n - +n and if = n is equal to 4 and l = n-3 then l=3. Therefore ml can only equal -3,-2,-1,0,+1,+2,+3. If n=4 ml can not equal 4.
Why is it that when models of atoms are shown the orbitals are drawn as big clouds?
They are drawn like this because it is impossible to predict the exact position and momentum with certainty. The orbital clouds represent the probable locations of electrons.
What is the condensed electron configuration for Hassium (Hs)?