History of the P.T.
The name of the first group in the periodic table
Alkali Metals
Which of the following elements has the highest electronegativity? Ne, F, O, N
Fluorine
Which of the following elements has a higher ionization energy?
F, Cl, Br, I
F - Fluorine
Which element on the periodic table is the largest?
Fr - Francium
Ions that lose an electron are called?
Cations
The father of the Periodic Table and separated the elements by atomic mass
Mendeleev
Which of the following elements has the lowest electronegativity?
K, Ca, Cu, Zn
K - Potassium
Which of the following has a lower ionization energy? Cs, Ba, Hg, Pb
Cs
Why does He have a smaller atomic radius than Xe?
Less energy levels
Ions that gain an electron are called?
Anion
What did Moseley use to put the elements in order on the periodic table
Atomic Number
Which of the following elements has the highest electronegativity?
C, Si, Ge, Sn
C- Carbon
Which of the following elements has a lower ionization?
Kr, Se, Mn, Ca
Ca
Which of the following elements has the largest atomic radii?
Li, N, O, B
Li- Lithium
Is the calcium ion (Ca2+) smaller or larger than the neutral calcium atom?
smaller
Separated the elements into triads
Dobereiner
Why does Magnesium have a higher electronegativity than strontium?
Magnesium has less energy levels. (higher coulombic attraction)
Which of the following has a larger first ionization energy?
He, S, Mo, Fr
He
Which of the following elements has the smallest atomic radii?
V, Kr, Ca, Cu
Kr - Krypton
Is the Ca2+ ion larger or smaller than the K+ ion?
smaller
Which group of elements react explosively with water?
Group 1- Alkali Metals
Why does Gallium have a higher electronegativity than calcium?
Ga has more protons, a higher coulombic attraction, and a higher nuclear charge.
Which of the following has the lowest first ionization energy?
Mg, Sr, Ba, Be
Ba
Which of the following elements has a larger atomic radius than Cobalt?
Zn, As, V, Ni
V- Vanadium
Which of the following ions is the smallest?
F- or Na+
Na+