Name two things that occur as the atomic number increases?
Elements change; atomic masses increase
100
Which family/group is the most stable?
The Noble gases.
100
Which group on the periodic table first introduce the new P-Orbitals?
Group 1.
100
Which family/group has the highest ionization level in each period?
Noble gases.
200
As the atomic number increases, the atomic mass should increase. Name one exception.
Cobalt (#27) is heavier than Nickel (#28)
etc.
200
As you move vertically downwards in the alkali metal group, what happens to the stability of the elements?
It becomes more unstable.
200
What is the valence orbital for the element Mercury.
5d.
200
What generally occurs as you go right on the table in terms of ionization energy?
Ionization energy increases.
300
Who was the person who first put the elements in the arrangement that we use today?
Dmitri Mendeleev
300
At room temperature, what the only element in the transitional metals group that is in a liquid state?
Mercury.
300
What is the electron configuration for element #19 (K)?
1s2 2s2 2p6 3s2 3p6 4s1
300
Which element is the hardest to have its electron stripped and why?
Helium, the electron is very close to the nucleus.
400
What is the atomic number of the latest discovered element?
#117 - Ununseptium
400
What is group/family does element #60 (Nd) belong to?
Lanthanoids.
400
"Group 1 and 2 end with S-Orbital while Group 13 to 18 end in P-Orbital on a typical table" What element is an exception to the relationship between group number and valence orbital?
Helium.
400
Every time you go vertically downwards one period on the table, what occurs? Explain why.
Energy required to strip the electrons away decreases because they are far from the nucleus.
500
If there element #120, where would it be located on the periodic table?
Under element #88 Ra.
500
Life on earth is carbon-based. If that had to be changed, name one element that can be possibly used to replace it.