Periodic Table 1
How many electrons can the first shell hold?
2
What does the atomic number of an element represent?
number of protons found in that atom
What are rows called?
periods
How do you calculate the number of neutrons in an atom?
atomic mass - atomic number (#p)
What element is in the 4th period and 12th group?
zinc
Which noble gas is an exception to the Octet rule?
Helium
What subatomic particles make up the mass of an atom?
protons and neutrons
What do all elements in the same row have in common?
Same number of shells
What kind of elements possess these properties malleable, ductile, good conductors, donate electrons, high melting point
metals
What element was named for the creator of the periodic table?
101 - Mendelevium
What is the name of the 3 main types of elements on the periodic table?
metals, non-metals, metalloids
What type of element sometimes behaves like a metal and other times like a nonmetal?
metalloids
What is the name of the vertical organization of the elements?
group or family
What are three physical properties of non-metals?
not shiny, not malleable (brittle), not ductile, poor conductors (good insulators), gain electrons, low density, low melting point
What element is located at the 6th period and 2nd group?
Barium
Which phase of matter has the least number of naturally existing elements?
liquids
Do metals, nonmetals, or metalloids have elements from all three phases of matter? (at room temperature)
non-metals
What do all the elements in the same column have in common?
same number of valence electrons
What element is in the same column with alkali metals but is not an alkali metal?
Hydrogen
What is the first element in period 3?
Sodium
The majority of the elements on the periodic table are classified as this:
metals
What group is inert, AND what does "inert" mean?
Noble gases are inert. Inert means "inactive"; they do not bond. (complete octet)
Which family name, not number, is the most reactive metallic family?
Alkali Metals
What is the name of group 17?
Halogens
How many electrons does a neutral atom of iodine have?
53