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21p+21e+24n=66

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12y ago

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What does the mass number equal?

The total number of subatomic particles in the nucleus


The atomic number for an element is the total number of subatomic particles?

False; the atomic number is the total number if protons in the nucleus only.


What is the total number of subatomic particles in the nucleus of an atom bi?

In this case, the number 209 represents the sum of protons + neutrons.


What is the number of subatomic particles in sulfur?

Sulfur has 16 protons and electrons; the number of neutrons is specific for each isotope: Number of neutrons in a sulfur isotope = Mass number - 16


Which term is used to describe the way the mass of subatomic particles is described?

Atomic Mass units =]


How many subatomic particles does calcium have?

Calcium atoms have 20 protons and 20 electrons. The number of neutrons varies with the isotope.


What is the total number of valence electrons in a scandium atom?

A scandium atom has 3 valence electrons.


How many total number of particles present in one atom?

The answer depends on the atom! The total number of subatomic particles in an atom of an isotope is the sum of the mass number and the atomic number of the isotope; the mass number counts the protons and neutrons together, and the atomic number recounts the number of protons, which in a neutral atom must be the same as the number of protons.


What is the total subatomic particles in the empirical formula Na2SO4?

212


What two subatomic particles contribute to the amu?

Protons and neutrons. The amu of an atom is the total number of protons and neutrons added together.


What is Number of subatomic particles of rubidium?

Rubidium has 37 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a rubidium isotope = Mass number - 37


Number of subatomic particles in potassium?

Potassium's atomic number is 19, meaning it has 19 protons in its nucleus. In a neutral potassium atom, there are also 19 electrons orbiting the nucleus. The most common isotope of potassium, K-39, has 20 neutrons, giving it a total of 39 subatomic particles.