Chapter 5 Chemistry Test Balentine
Which group of elements was discovered by Strutt and Ramsay?
noble gasses
To which group does hydrogen belong?
none of the above
If n stands for the highest occupied energy level, the outer configuration for all Group 1 elements is
ns1
The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic
numbers
A horizontal row of blocks in the periodic table is called a(n)
period
Refer to the figure above. Potassium and bromine belong to
period 4
A repeating pattern is referred to as
periodic
The periodic law allows some properties of an element to be predicted based on its
position in the periodic law
Elements in a group or column in the periodic table can be expected to have similar
properties
Mendeleev did not always list elements in his periodic table in order of increasing atomic mass because he grouped together elements with similar
properties
The number of valence electrons in Group 1 elements is
1
The atomic number of lithium, the first element in Group 1, is 3. The atomic number of the second element in this group is
11
Period 4 contains 18 elements. How many of these elements have electrons in the d sublevel?
16
An element that has the electron configuration [Ne]3s23p5 is in Group
17
Because the first energy level contains only the 1s sublevel, the number of elements in this period is
2
An element that has the electron configuration [Ne]3s23p5 is in Period
3
Bromine, atomic number 35, belongs to Group 17. How many electrons does bromine have in its outermost energy level?
7
Which represents a neutral atom acquiring an electron in a process where energy is released?
A + e-® A- + energy
Evidence gathered since Mendeleev's time indicates that a better arrangement than atomic mass for elements in the periodic table is an arrangement by
Atomic number
The person whose work led to a periodic table based on increasing atomic number was
Moseley
The elements in Group 1 are also known as the
alkali metals
The group of soft, silvery, reactive metals, all of which have one electron in an s orbital, is known as the
alkali metals
A negative ion is known as a(n)
anion
The most characteristic property of the noble gases is that they
are largely unreactive
One-half the distance between the nuclei of identical atoms that are bonded together is called the
atomic radius
The ionization energies required to remove successive electrons from one mole of calcium atoms are 590 kJ/mol, 1145 kJ/mol, 4912 kJ/mol, and 6474 kJ/mol. The most common ion of calcium is probably
ca2+
When an electron is added to a neutral atom, a certain amount of energy is
either released or absorbed
A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called
electronegativity
Neutral atoms with an s2p6 electron configuration in the highest energy level belong to which block of the periodic table?
f block
The element that has the greatest electronegativity is
fluorine
Across a period in the periodic table, atomic radii
gradually decreases
Magnesium, atomic number 12, has the electron configuration [Ne] 3s2. To what group does magnesium belong?
group 2
Strontium's highest occupied energy level is 5s2. To what group does strontium belong?
group 2
Titanium, atomic number 22, has the configuration [Ar] 3d2 4s2. To what group does titanium belong?
group 4
Among the d-block elements, as atomic radii decrease, electronegativity values
increase
Across a period in the periodic table, ionization energy generally
increases
As the atomic numbers of the metals of Group 1 increase, the ionic radii
increases
Down a group in the periodic table, atomic radii generally
increases
The group of 14 f block elements in the sixth period is the
lanthanides
Elements in the s and p blocks of the periodic table are called
main group elements
Elements in which the d-sublevel is being filled have the properties of
metals
The first member of the noble gas family, whose highest energy level consists of an octet of electrons, is
neon
In Period 3 there are 8 elements. What sublevel(s) is (are) being filled?
s and p
The first electrons to be removed when d-block elements form ions are the
s electrons
Identify the sublevels in a period that contains 32 elements.
s,p,d,f
What are the radioactive elements with atomic numbers from 90 to 103 called?
the actinides
What are the elements with atomic numbers from 58 to 71 called?
the lanthanides
Which is the best reason that the atomic radius generally increases with atomic number in each group of elements?
the number of occupied energy levels increases
The principle that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers is
the periodic law
The electrons available to be lost, gained, or shared when atoms form compounds are called
valence electrons