Iron, Ruthenium, Osmium, and Hassium.
They're transition metals
Answer:
17.6 grams of nitrogen gas
The standard atomic weight is the average mass of an element in atomic mass units ("amu"). Though individual atoms always have an integer number of atomic mass units, the atomic mass on the periodic table is stated as a decimal number because it is an average of the various isotopes of an element.
Answer:
in our solar system, the rocky planets are Mercury, Venus, Earth, and Mars
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Explanation:
