Flashcards in Properties and group trends rest of chap 7 Deck (24):
Metals tend to form
Nonmetals tend to form
The first ionization energies for metals are much ____ than those of nonmetals.b/c
lower, is easy to remove electrons from metals, they tend to form cations (+
metals They tend to be
lustrous (shiny), malleable (sheets), ductile (wires), and good conductors of heat and electricit
Compounds formed between metals and nonmetals tend to be
Most metal oxides function as
nonmetals They tend to be
dull, brittle substances that are poor conductors of heat and electricity.
Nonmetals tend to have ______ electron affinities
Compounds formed between nonmetals and nonmetals are
Most nonmetal oxides form
acids in water.
For instance, silicon looks shiny, but is brittle and fairly poor conductor.
Group 1A, Alkali Metals
soft, metallic solids,Largest atomic radii, very exothermic reactions
Group 1A, Alkali Metals low..
low densities and melting points.and ionization energies
Group 2A, Alkali Earth Metals compares. Alkali metals
higher densities and melting points than alkali metals.
Their ionization energies are low, but not as low as those of alkali metals.
Alkali Earth Metals Reactivity tends to increase as you go down the group what are some examples
Beryllium does not react with water and magnesium reacts only with steam, but the others react readily with water
Group 6A React vigorously with __________ and __________
alkali and alkali earth metals
metals, metalloids, and nonmetals
Group 6A Oxides:
different forms of the same element in the same physical state.
two allotropes of oxygen:
Sulfurs stable allotrope at room temperature is
Group 7A: Halogens have high
electronegativity (electron affinity)
Group 7A: they tend to ____other elements easily.
Group VIIIA: Noble Gases the highest and have positive
ionization energies, electron affinities