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Isotopes of an element have the same number ofA. protons and electrons.B. protons and neutrons.C. neutrons and electrons.D. protons, neutrons and electrons.16. What is the difference between two neutral atoms represented by the symbols59 5927 28Co and Ni ?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.17. How many electrons are there in one24 212 Mg + ion?A. 10B. 12C. 14D. 2218. Copper consists of the isotopes 63Cu and 65Cu has a relative atomic mass of 63.55. What is the most likelycomposition?63Cu 65CuA. 30 % 70 %B. 50 % 50 %C. 55 % 45 %D. 70 % 30 %19. Information is given about four different atomsatom neutrons protonsW 22 18X 18 20Y 22 16Z 20 18Which two atoms are isotopes?A. W and YB. W and ZC. X and ZD. X and YPage 9 of 77

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Isotopes of an element have the same number ofA. protons and electrons.B. protons and neutrons.C. neutrons and electrons.D. protons, neutrons and electrons.16. What is the difference between two neutral atoms represented by the symbols59 5927 28Co and Ni ?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.17. How many electrons are there in one24 212 Mg + ion?A. 10B. 12C. 14D. 2218. Copper consists of the isotopes 63Cu and 65Cu has a relative atomic mass of 63.55. What is the most likelycomposition?63Cu 65CuA. 30 % 70 %B. 50 % 50 %C. 55 % 45 %D. 70 % 30 %19. Information is given about four different atomsatom neutrons protonsW 22 18X 18 20Y 22 16Z 20 18Which two atoms are isotopes?A. W and YB. W and ZC. X and ZD. X and YPage 9 of 77

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What is the difference between two neutral atoms represented by the symbols59 5927 28Co and Ni ?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

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1.Potassium has an atomic number of 19 and an atomic mass of 39.098. How many protons does Potassium have?19395820Continue

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