What is the difference between two neutral atoms represented by the symbols21084 Po and21085 At ?A. The number of neutrons only.B. The number of protons and electrons only.C. The number of protons and neutrons only.D. The number of protons, neutrons and electrons
Question
What is the difference between two neutral atoms represented by the symbols21084 Po and21085 At ?A. The number of neutrons only.B. The number of protons and electrons only.C. The number of protons and neutrons only.D. The number of protons, neutrons and electrons
Solution 1
The difference between two neutral atoms represented by the symbols 21084 Po (Polonium) and 21085 At (Astatine) is in the number of protons and electrons only.
The superscript (210) represents the atomic mass number, which is the sum of protons and neutrons in the nucleus. Since both atoms have the same atomic mass number, they have the same total number of protons and neutrons.
The subscript (84 for Po and 85 for At) represents the atomic number, which is the number of protons in the nucleus. Since these numbers are different, the two atoms have a different number of protons.
In a neutral atom, the number of protons is equal to the number of electrons. Therefore, since the number of protons is different, the number of electrons is also different.
So, the correct answer is B. The number of protons and electrons only.
Solution 2
The difference between two neutral atoms represented by the symbols 21084 Po (Polonium) and 21085 At (Astatine) is in the number of protons and electrons only.
The superscript (210) represents the atomic mass number, which is the sum of protons and neutrons in the nucleus. Since this number is the same for both atoms, they have the same number of neutrons.
The subscript (84 for Po and 85 for At) represents the atomic number, which is the number of protons in the nucleus. Since these numbers are different, the number of protons in each atom is different.
In a neutral atom, the number of electrons equals the number of protons. Therefore, the number of electrons in each atom is also different.
So, the correct answer is B. The number of protons and electrons only.
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Which two particles are always found in equal numbers in neutral atoms?A.Protons and neutronsB.Electrons and neutronsC.Protons and electronsD.Neutrons and ions
In a neutral atom, the number of protons is always equal to:A the number of neutronsB the number of electronsC the number of nucleonsD the atomic mass*1 pointABCD
Fill in the missing information:symbol atom or ion?check all that apply number of protons number of electrons neutral atomcationanion52 54 neutral atomcationanion22 21 neutral atomcationanion12 12
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