If the burning of a 0.53-gram piece of magnesium results in the formation of 1.21 grams of magnesium oxide, what mass of oxygen gas was consumed?

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

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answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.