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.
Hydrogen (H)
Iodine (I)
Helium (He)
Sodium (Na)
Elements in Group 2 are known as the _____.
alkali metals
halogens
alkaline earth metals
metalloids
Which of the following is the poorest conductor of electricity? Which of the following is the poorest conductor of electricity?
Fluorine (F)
Silicon (Si)
Cobalt (Co)
Calcium (Ca)
Which two elements would have the most similar atomic radii?
Boron and silicon
Beryllium and magnesium
Aluminum and carbon
Sodium and beryllium
Why are metals good conductors of electricity?
Their protons are held very loosely.
Their neutrons are held very tightly.
Their outer electrons are held very loosely.
Their protons are held very tightly.
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.
Which of the following elements is a main group element?
Copper
Gold
Manganese
Aluminum
Which group does NOT contain transition metals?
Group 13
Group 9
Group 5
Group 11
Which element will predictably carry a positive 1 charge when it becomes an ion?
Calcium
Bromine
Potassium
Gallium
Which element has the highest electronegativity?
Calcium
Barium
Fluorine
Carbon
As you move from left to right on the periodic table, what happens to the electronegativity?
It decreases, then increases with the noble gases
It remains constant.
It increases.
It decreases.
Which of the elements below has the smallest ionization energy?
sodium (Na)
francium (Fr)
aluminum (Al)
bromine (Br)
As you move from top to bottom on the periodic table, what generally happens to the ionization energy?
it decreases
it increases
it cannot be determined
it remains constant
As you move from left to right on the periodic table, what generally happens to the ionization energy?
it cannot be determined
it remains constant
it increases
it decreases
Which of these elements has the largest atomic radius?
Bromine (Br)
Astatine (At)
Silicon (Si)
Barium (Ba)
As you move from top to bottom on the periodic table, what happens to the atomic radius?
It decreases, then increases.
It increases.
It decreases.
It increases, then decreases.
