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≠(does not equal).
45000000 = 4.5 * 107
5.3 x 10negative 6
6.17 x 10^5 6.17e+5
0.000276 in Scientific Notation = 2.76 x 10-4
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≠(does not equal).
The average Atomic Mass
45000000 = 4.5 * 107
a subscript Number of atoms of that element in the molecule.
2.17 * 108
5.19*10-5
subscript
5.3 x 10negative 6
The number below the symbol in the periodic table of elements is the relative atomic mass. It is calculated by taking the mass of all of the ions of an element and working out the mass based on the percentage occurrence of each ion.