Periodic Table
Which element is in Group 17, Period 2?
F
What vanilla atom has a mass number of 100 amu?
Sn
What element has an electron configuration of
2e-, 8e-
Ne
Which element has the larger atomic mass?
Mg / P
P
Rb
If an iridium has an average atomic mass of 192.2 amu, what would the mass number of the most abundant isotope of this element be?
192
What element has an electron configuration of
2e-, 8e-, 3e-
Al
Which element has the largest atomic radius?
C / Ge / Br
Ge
Which element has 4 valence electrons in its 4th energy level?
Ti
Bromine-79 has an abundance of 50.7%. Bromine-81 has an abundance of 49.3%. What would you expect the average atomic mass to be (to the nearest whole number)?
80
What element has an electron configuration of
2e-, 8e-, 8e-, 7e-
Mn
Which element is the least electronegative?
Ca / Ga / Ba
Ba
Which element would form a -2 charge and has 6 energy levels?
Po
Radium has 4 isotopes: radium-86, -87, -88, -89, -90. Each isotope has an abundance of 20%. What would you expect the average atomic mass to be (to the nearest whole number)?
88
What element has an electron configuration of
2e-, 8e-, 8e-, 18e-, 17e-
I
Which element has the highest ionization energy?
N / Cl / Be / He
He
Which metalloid would form a +3 charge?
Calculate the average atomic mass of Te if the isotopes are:
Tellurium-100 50% Tellurium-125 20%
Tellurium-150 20% Tellurium-200 10%
125 amu
What element has an electron configuration of
2e-, 8e-, 8e-, 18e-, 18e-, 32e-, 12e-
Cf
Which element has both the smallest atomic radius and the most electronegativity?
Br / Cl / Ar / S / Se
Cl