(a)[1]
an element that forms a $1+$ ion
(b)[1]
a metal extracted in the blast furnace
(c)[1]
a soft metal that is more reactive than sodium
(d)[1]
about $78\%$ of clean, dry air
(e)[1]
a gas that can be identified with damp red litmus paper
(f)[1]
a liquid at room temperature and pressure
(g)[1]
an element used in food containers because it is resistant to corrosion
(h)[1]
one of the transition elements.