Chemistry Ch 5 Practice Test Pt II
What can be removed from an atom if ionization energy is supplied?
an electron
An element that has the electron configuration [Ne] 3s2 3p5 is in Group
17
An element that has the electron configuration [Ne] 3s2 3p5 is in Period
3
One of the least electronegative elements would be found on the periodic table in
Group 1, Period 7
An element with the smallest anionic (negative-ionic) radius would be found on the periodic table in
Group 17, Period 2
In which group is an element that has an outer-level electron configuration consisting of one electron in the d orbital and two electrons in the ns orbital?
Group 3
To which group does hydrogen belong? (Out of Group 1, Group 2, Group 18)
None of the above
In nature, the alkali metals are found only in compounds because they
are very reactive elements
Across a period in the periodic table, atomic radii generally
decrease
The atomic radius of an atom that is chemically bonded to an identical atom is equal to
half the distance between the nuclei
Nonmetallic elements in Group 17 that react with most metals to form salts are
halogens
As the atomic numbers of the metals of Group 1 increase, the ionic radii
increase
Down a group in the periodic table, atomic radii generally
increase
Across a period in the periodic table, ionization energy generally
increases
Down a group in the periodic table, the change in ionization energy is due to
increasing electron shielding
Elements in the s and p blocks of the periodic table are called
main-group elements
An element found in groups 3-12 of the periodic table is classified as a
transition metal
The outer-level electron configuration of a neutral alkaline-earth metal atom consists of
two electrons in the s orbital
An electron that is in the highest energy level of an atom and determines the atom's chemical properties is called a
valence electron
Elements in Group 18 have
very low reactivity