What Is Sodium's Atomic Mass?
Sodium Is a Chemical Element with the Symbol Na and Atomic Number 11. It Is a Soft, Silvery-White, Highly Reactive Metal. Sodium Is an Alkali Metal, Being in...
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.
Why is the atomic mass of sodium 23?
Mass number = Total number of protons + Total number of neutrons Sodium atom has 11 protons and 12 neutrons in its nucleus. Thus, we get the atomic mass number 11 + 12 = 23. ... Na has the atomic mass number 23, so its atomic mass is 23 amu.
What is isotope atomic mass?
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
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