What is shielding of the nuclear charge by the inner electron energy levels?
100
Which is larger, Mg or Se?
What is Se?
100
The definition of electronegativity.
What is the ability of an atom to attract electrons even when already bonded to another atom?
200
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6
What is Ruthenium
200
The larger atom of V, Ba, and Cl.
What is Ba?
200
The reason for the trends across a period.
What is the increasing nuclear charge pulling tighter on the electron cloud?
200
Which is larger O or Se?
What is Oxygen?
200
Fluorine
What is the element with the highest electronegativity?
300
The configuration for -3 phosphorous ion
What is 1s2 2s2 2p6 3s2 3p6
300
Why are cations smaller than their atoms?
What is they have lost electrons and the nuclear charge pulls the cloud in?
300
The trend for density on our graphs.
What is the highest densities are in Group 13 and the middle of the transition metals, Group 9?
300
Why is the second ionization energy of K greater than the second ionization energy of Ca?
What is the second electron for K comes from a full shell or noble gas configuration?
300
Nonmetals
What is the elements with the highest electronegativities?
400
The reason why transition elements don't always follow the rules for filling the orbitals.
What is the special stability of full and half filled orbitals?
400
Why are anions larger than cations?
What is anions gain electrons and the nuclear charge is less effective making the cloud larger?
400
The properties of the elements are periodic functions of their atomic numbers.
What is the periodic law?
400
Why do the noble gases have such high ionization energy?
What is they have the most stable electron configuration with a full shell of valence electrons?
400
Linus Pauling
What is the chemist who created the scale electronegativity?
500
The noble gas configuration for U.
What is [Rn]7s2 5f4
500
-2 +2 +1 -1
O Mg Na Ne F
Put these in order from smallest to largest and tell why.
What is +2 +1 -1 -2
Mg Na Ne F O ?
They all have the same number of electrons in their outer shell, but Mg has the highest effective nuclear charge.
500
Halogens, alkali metals, oxygen family, noble gases, transition metals, and alkaline earth metals
Put these in order for increasing atomic size.
What is noble gases, halogens, oxygen family, alkali metals, and alkaline earth metals?
500
Trend of ionization energy in groups.
What is decreases as you go down because the valence electrons are farther away from nucleus which means less energy is required to remove the valence electrons?
500
The factors that effect how electronegative an atom is?
What is - distance from the nucleus
- atomic charge
- electron shielding