Chemistry Unit 8
which of the following groupings contains only representative elements?
Al, Mg, Li
which of these elements has the greatest ionization energy?
Ar
The formation of Na+ ion results in
sodium losing an electron because of low ionization energy
From graph of ionization energy below, what happens to ionization energy as you move down a group (Family)?
the ionization energy decreases
if the outer electron configuration of an element is 2s1, the element below it in the periodic table will have an outer electron configuration of
3s1
Which of these elements has the greatest atomic radius?
Ba
Which has the greatest ionization energy?
Cl
Which of these elements has the greatest electronegativity value?
Cl
the least electronegative element from among the following is:
Cs
What is true about the relationship between Cesium (Cs) and Asatine?
Cs has greater atomic radius, smaller ionization and smaller electronegativy
Which arrangement shows elements in order of decreasing atomic radius?
Cs, K, Li, C, F
which arrangement shows the elements in order of increasing ionization energy?
Cs, K, Li, C, F
which arrangement show elements in order of decreasing electronegativy?
F, C, Li, K, Cs
Which of the following elements would probably NOT react with a group 2A metal?
Ne
Of the following elements: K, O and F, which two would be mostly likely to react?
K and F
K, a very reactive metal reacts with Br2, a gas to yield the salt, potassium bromide (KBr). this reaction occurs because
K has a low ionization energy and Br has a high electronegativity
K, a very reactive metal reacts with Br2, a gas to yield the salt, potassium bromine (KBr). this reaction occurs because
K has a low ionization energy and Br has a high electronegativity
what is true about relationship between lithium (Li) and Francium (Fr)?
Li has high ionization, high electronegativity and smaller atomic radius
what is the relationship between the number of energy levels in an atom and its electronegativity?
as the number of energy levels increase, the electronegative decreases
which of the following elements has the smallest atomic radius?
chlorine
What term is used to describe an atom's tendency to attract electrons to itself when it is chemically combined with another element?
electronegativity
Which of the following factors is responsible for that fact that higher atomic number elements in any particular family tend to have lower electronegativities than lower atoms number elements in the same family?
greater distance from nucleus
Which of the following factors contributes to the greater ionization of the elements on the right side of a period in the periodic table?
greater number of protons in nuclei
The vertical columns of the periodic table are called
groups
compared with the electronegativities of the elements at the left end of a particular period, the electronegative of the elements at the right side of that same period tend to be
higher
How does atomic radius change from left to right across a period in the periodic table?
it tends to decrease
How does atomic radius change down a group in the periodic table?
it tends to increase
which of the following elements is in the same period as phosphorus?
magnesium
which of the following elements has the smallest ionization?
potassium
the category of elements that is characterized by the filling of the d orbital is the
transition metals
