# How many protons, neutrons, and electrons are there in a neutral atom of 113in (indium-113)?

How many protons, neutrons, and electrons are there in a neutral atom of 113in (indium-113)?

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Explanation: In a neutral atom the number of protons equal the number of electrons. Also, it is known that atomic number means number of protons. Atomic number of indium is 49 that means number of protons in indium is 49. Since it is a neutral atom so, number of electrons in an indium atom is also 49. Whereas mass number means sum of total number of protons and neutrons.           Mass number = no. of protons + no. of neutrons                  113 = 49 + no. of neutrons            no. of neutrons = 113 – 49                                       = 64 Hence, in a neutral indium atom no. of protons = no. of electrons = 49 and no. of neutrons is 64.

Number of Protons  =  19              Number of Neutrons  =  25              Number of Electrons  =  19 Explanation: Number of Protons:                                The number of protons present in any atom are equal to the atomic number of that particular atom. Hence, as the atomic number of Potassium is 19 therefore, it contains 19 protons. Number Neutrons:                              The number of neutrons present in atom are calculated as,                                # of Neutrons  =  Atomic Mass – # of protons As given,                                 Atomic Mass  =  43                                 # of Protons  =  19 So,                                 # of Neutrons  =  43 – 19                                 # of Neutrons  =  24 Number of Electrons:                                    As we know for a neutral atom the number of electrons are exactly equal to the number of protons present in its nucleus. So, for 19 protons in neutral Potassium atom there must be 19 electrons.

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26 protons, 29 neutrons, and i believe 26 electrons

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