How many neutrons and protons are there in the following nuclei? $_{6}^{13}\textrm{C}$ , $_{8}^{16}\textrm{O}$ , $_{12}^{24}\textrm{Mg}$ , $_{26}^{56}\textrm{Fe}$ , $_{38}^{88}\textrm{Sr}$ .

Question

How many neutrons and protons are there in the following nuclei?  $_{6}^{13}\textrm{C}$ ,  $_{8}^{16}\textrm{O}$ ,  $_{12}^{24}\textrm{Mg}$ ,  $_{26}^{56}\textrm{Fe}$ ,  $_{38}^{88}\textrm{Sr}$ .

cdquestions Admin · Accepted Answer

$_{6}^{13}\textrm{C}$ : Atomic mass = 13 Atomic number = Number of protons = 6 Number of neutrons = (Atomic mass)(Atomic number) = 13 6 = 7 $_{8}^{16}\textrm{O}$ : Atomic mass = 16 Atomic number = 8 Number of protons = 8 Number of neutrons = (Atomic mass)(Atomic number) = 16 8 = 8 $_{12}^{24}\textrm{Mg}$  : Atomic mass = 24 Atomic number = Number of protons = 12 Number of neutrons = (Atomic mass) (Atomic number) = 24 12 = 12 $_{26}^{56}\textrm{Fe}$  : Atomic mass = 56 Atomic number = Number of protons = 26 Number of neutrons = (Atomic mass)(Atomic number) = 56 26 = 30 $_{38}^{88}\textrm{Sr}$  : Atomic mass = 88 Atomic number = Number of protons = 38 Number of neutrons = (Atomic mass)(Atomic number) = 88 38 = 50

How many neutrons and protons are there in the following nuclei? \(_{6}^{13}\textrm{C}\), \(_{8}^{16}\textrm{O}\), \(_{12}^{24}\textrm{Mg}\), \(_{26}^{56}\textrm{Fe}\), \(_{38}^{88}\textrm{Sr}\).

Solution and Explanation

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Concepts Used:

Atomic Models

There are five atomic models:

John Dalton’s atomic model - Dalton´s Billiard Ball (Solid Sphere) Model

J.J. Thomson’s model - Plum Pudding model

Ernest Rutherford’s model - Nuclear model

Niels Bohr’s model - Planetary model

Erwin Schrödinger’s model - Electron Cloud Model/Quantum Model