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