Groups/Intro
Dmitri Mendeleev is known as the father of the modern periodic table, because his table did what that others did not?
Predicted undiscovered element properties
What groups holds the alkaline earth metals?
group 2 OR 2A
What is the trend for atomic radius from left to right across a periodic table?
atomic radii get smaller
List the symbols for Li, C, and Be in order of increasing atomic radii.
C--Be--Li
Which particle is bigger? Li or Li+
Li
Iodine has a larger atomic radius than Bromine, why?
What group holds the noble gases?
group 8A or 18
Where are the transition metals?
d block
What is the trend for atomic radii down a group in the periodic table?
atomic radii get bigger
List the symbols in order of increasing atomic radius: I, Cl, Br, F
F-Cl-Br-I
Which particle is bigger Cl or Cl-
Cl-
Iodine has more protons that pull electrons in the same energy level in tighter.
What group holds the alkali metals?
group 1 OR 1A
Where are the inner transition metals?
f block
What is the trend for ionization energy left to right across the periodic table?
ionization energy increases
List the symbols in order of increasing ionization energy: Be-Mg-Ca
Ca-Mg-Be
How many valence electrons does sulfur have?
6
Calcium has a larger ionization energy than strontium. Why?
It is smaller in size, so the electron is harder to take.
What group includes the halogens?
group 7A or 17
What elements are the main group elements?
1,2-13-18
What is the trend for ionization energy down a group in the periodic table?
ionization energy decreases
List the symbols in order of increasing ionization energy:Mg-Si-Al
Mg--Al--Si
Which experiences a larger effective nuclear charge in chlorine? It's 2s electrons or its 3s electrons?
2s
IE 1--50 kJ
IE 2--100 kJ
IE 3-- 10000 kJ
How many valence electrons does this element have?
2 valence electrons
Si is what type of element
Metalloid
Nonmetal
Name one property of a metal
Good conductor of heat, electricity, malleable.
Draw an lewis dot diagram for Oxygen.
O with 6 dots, 2 separate
Strontium
Between which two ionization energy values would calcium have a large jump?
2-3