An atom has a mass number of 39. If it has 20 neutrons, calcula...

1)an atom has a mass number of 27 and 14 neutrons. what is the atomic number of this atom? 2)The...

How is the mass number of atom calculated?

The mass number of an atom is equal to the sum of the protons and neutrons in the nucleus. A Plutoni...

An atom has a mass number of 43 and it also has 21 electrons. a) How many protons does this atom ha...

The mass number of an atom is determined by the sum of a. protons and electrons b. protons o...

What is mass number of an atom with 19 electrons and 20 neutrons? e -= p += n 0 = atomic mas...

The mass number of an atom is equal to the sum of protons and neutrons in the nucleus. A helium atom...

An atom’s mass number is 210 and its atomic number is 85. How many neutrons does the atom have?

If an atom has a mass number of 238 and a proton number of 92, what element is this? Responses p...

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