Exam 3 Flashcards
The ease with which the first valence shell electron can be removed from an atom is called the atom’s
ionization energy
is amount of energy required or released by the addition of an electron to the neutral atom.
electron affinity
ionic transition metal oxides (with an oxidation number of +1 to +3) are
basic. That is, they will react with aqueous acids to form solutions of salts and water.
the oxides with oxidation numbers of +5, +6, and +7 tend to be
acidic and react with solutions of hydroxide ions to form salts and water.
the changes that occur as you go down the alkali metal group
All have a single electron in an ‘s’ valence orbitalTheir melting points decrease (Why?)Their densities increaseThey become softerThey become more reactive (Why?)The ionization energy decreases (first ionization energy)
Compared with the alkali metals, the alkaline earth metals are typically:
hardermore densemelt at a higher temperature
Noble gases all have similar properties that include:
They are all considered non-metals. They are all colorless. They are all monatomic. They are all non-reactive.
lattice energy will always be what type of value
positive
a measure of the attraction an atom has for bonding electrons.
electronegativity
Breaking bonds requires energy
endothermic
making bonds releases energy
exothermic
what does VSPER stand for
Valence-Shell Electron-Pair Repulsion