definitions and extras

Karisma Hira
Flashcards by Karisma Hira, updated more than 1 year ago
Karisma Hira
Created by Karisma Hira almost 5 years ago
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Flashcards on definitions, created by krizzy_98 on 09/11/2015.
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Question Answer
reatlative isotopic mass the mass of an atom of an isotope compared with 1/12th of the mass of an atom of carbon-12
relative molecular mass is the weighted mean mass of a molecule compared to 1/12th of the mass of an atom of carbon-12
molecular formula •is the actual number of atoms of each element that is present •we use it for simple compounds
group 1 metals •forms a M+ ion •called the alkali metals
silver ag+
ammonium NH4+
group 2 • form M2+ ions • called the alkaline earth metals
copper Cu2+
cobalt Co2+
zinc Zn2+
lead Pb2+
group 3 • form M3+ ions
chromium Cr3+
group 7 • called the hallide ions • form X- ions
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