Periodic Table I
What type of element is arsenic?
metalloid
These metals are the most reactive
alkali metals
Which element is found in brimstone?
sulfur
Which property measures the energy required to remove an electron?
ionization energy
Which of these has a the greater electronegativity?
oxygen or sulfur
oxygen
What are the group I elements called?
alkali metals
What type of elements are good semiconductors?
metalloids
What is the most unreactive metal?
gold
Which element is the most electronegative?
fluorine
Which of these has a greater ionization energy?
Magnesium or strontium
magnesium
What is the name of the group that contains chlorine?
halogens
Which elements make water "hard"?
calcium and magnesium
carbon
lithium or potassium
potassium
Which of these has a greater ionization energy?
rubidium or iodine
iodine
What type of element is uranium?
These two elements are liquids at room temperature
bromine and mercury
Which element was first extracted from urine?
phosphorus
Which of these has the smaller atomic radius?
Potassium or bromine
bromine
Which of these has the greater electronegativity?
carbon or nitrogen
nitrogen
What type of element is aluminum?
post-transition metal
Mendeleev organized his periodic table by this.
atomic mass
Which element is used in smoke detectors?
americium
Which of these has a larger radius?
Na or Na+
Na
Which property measures the energy released when an electron joins an atom?
electron affinity