Isotopes RAM Balancing Nuclear Equations The number of neutrons in U-239 is 92 147 145 239 The number of neutrons in Pu-238 is 238 145 144 94 Isotopes of an element Not possible to predict Show the same chemical property Show the same physical property Shows both the same physical and chemical properties The letter ‘A ‘represents while using notations to write elements to represent the number of protons, neutrons and electrons is/are The number of electrons in an ion Atomic Number or number of protons Mass number or number of protons and electrons Mass number or number of protons and neutrons Determine the number of protons, neutrons, and electrons in the following isotopes: atomic number 9, mass number 18, charge of 1− Protons = 9 Neutrons = 18 Electrons = 9 Protons = 9 Neutrons = 9 Electrons = 10 Protons = 9 Neutrons = 9 Electrons = 9 Protons = 9 Neutrons = 9 Electrons = 7 If the relative atomic mass of Br is 78.9183 what is its mass number 78.9183 79.9183 80 79 78 Bromine has two isotopes, Br-79 and Br-81, whose relative atomic are masses 78.9183 u and 80.9163 u and abundances are 50.69% and 49.31% Calculate the relative average atomic mass of Br based on these experimental results. 80.00 u 79.90 u 78.91 u 78.34 u When balancing nuclear reaction the following reasoning is used. Both the reactants and products the mass number should be same Both the reactants and products should have the same atomic number True False The letter ‘Z ‘represents, while using notations to write elements to represent the number of protons, neutrons and electrons is/are Mass number or number of protons and neutrons Mass number or number of protons and electrons Atomic Number or number of protons The number of electrons in an atom A beta particle is a/an Positron Electron An ion with a negative charge Proton Which among the following choices best describes an isotope? Elements that have the same number of electrons Elements that have the same number of protons and neutrons Elements that have the same number of neutrons Elements that have the same number of protons but different number of neutrons Elements that have the same number of neutrons but different number of protons An alpha particle is a/an Helium with a 2+ charge Proton Electron Helium atom Loading … Question 1 of 12 Share this:TweetWhatsAppLike this:Like Loading...
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Names of Covalent Compounds Please go to Names of Covalent Compounds to view the test Share this:TweetWhatsAppLike this:Like Loading...