The atomic particles in the nucleus of an atom are called?

The atomic number is also known to be

The average atomic mass on the periodic table is a decimal number because

The whole number in the periodic table element box represents

An ion is

In the isotopic notation Li-7 Lithium has how many neutrons?

If isotope Be-11 is 0.80% and Be-10 is 99.20% what is the average atomic mass?

How many protons are in a Helium atom?

How many electrons in a neutral atom of sulfur?

How many electrons in oxygen ion with a 2- charge

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