Which element listed is likely to be the most reactive?
magnesium
strontium
beryllium
barium
Which two elements would have the most similar atomic radii?
Aluminum and carbon
Beryllium and magnesium
Boron and silicon
Sodium and beryllium
As you move from left to right on the periodic table, what generally happens to the ionization energy?
it decreases
it increases
it remains constant
it cannot be determined
Which of these elements has the smallest atomic radius?
Nitrogen (N)
Phosphorus (P)
Arsenic (As)
Antimony (Sb)
As you move from top to bottom on the periodic table, what happens to the atomic radius?
It decreases.
It decreases, then increases.
It increases, then decreases.
It increases.
Which element has the highest electronegativity?
Barium
Calcium
Fluorine
Carbon
As you move from top to bottom on the periodic table, what generally happens to the metallic character of elements?
It decreases.
It remains constant.
It increases.
It increases, then decreases.
What is an electron shell?
The space around the nucleus where the electrons are found
A hard container holding electrons close to the nucleus
The electron's protective outer layer
The exact location of an electron
In which energy level is the outer electron in rubidium located?
2
37
5
85
Elements in Group 2 are known as the _____.
alkali metals
halogens
metalloids
alkaline earth metals
Which of these elements has the largest atomic radius?
Astatine (At)
Barium (Ba)
Bromine (Br)
Silicon (Si)
Electronegativity is the ability of an atom to _____
attract electrons.
repel electrons.
attract neutrons.
repel protons.
As you move from top to bottom on the periodic table, what generally happens to the ionization energy?
it decreases
it increases
it remains constant
it cannot be determined
Which of the following will react violently with water to form a base?
Cobalt (Co)
Potassium (K)
Chlorine (Cl)
Calcium (Ca)
As you move from left to right on the periodic table, what happens to the electronegativity?
It remains constant.
It decreases, then increases with the noble gases
It increases.
It decreases.
Which of the following elements has the same number of valence electrons as aluminum?
zinc
magnesium
silicon
boron
Why are metals good conductors of electricity?
Their outer electrons are held very loosely.
Their protons are held very tightly.
Their protons are held very loosely.
Their neutrons are held very tightly.
Which of the following elements is a main group element?
Copper
Gold
Aluminum
Manganese
Which of the elements below has the smallest ionization energy?
aluminum (Al)
sodium (Na)
bromine (Br)
francium (Fr)
Which element is found in the group described by the statement below? This group contains poisonous, very reactive elements often used in bacteria killing or household cleaners.
Iodine (I)
Sodium (Na)
Hydrogen (H)
Helium (He)
Which of the following is the poorest conductor of electricity? Which of the following is the poorest conductor of electricity?
Cobalt (Co)
Calcium (Ca)
Fluorine (F)
Silicon (Si)
Which of these elements has the largest atomic radius: argon, phosphorus, aluminum, sodium or magnesium?
Phosphorus (P)
Argon (Ar)
Sodium (Na)
Aluminum (Al)
Which element will predictably carry a positive 1 charge when it becomes an ion?
Gallium
Potassium
Bromine
Calcium
What is ionization?
removing protons from an atom
adding neutrons to an atom
adding protons to an atom
removing electrons from an atom
Which element is a transition group metal and likely to exist in many different forms?
Barium
Rubidium
Phosphorous
Manganese
Which group does NOT contain transition metals?
Group 11
Group 9
Group 5
Group 13
Given the following information, which element(s) are most likely to lose electrons? I. Iodine is a member of Group VII (halides). II. Strontium is located in the second column of the periodic table. III. Selenium has six valence electrons.
Strontium
Selenium
Iodine
Selenium and strontium
As you move from left to right on the periodic table, what generally happens to the boiling point of elements?
It decreases, then increases.
It increases, then decreases.
It remains constant.
It decreases.