History Bookmarks Window Help arning < +660 pts /2400 Question 8 of 24 O Macmillan Learning > achieve.macmillanlearning.com M Assessment - General, Organic, and Biological Chemistry for Health Sciences a Tue Sep 3 9:44 PM Start Page Resources ? Hint Submit Answer A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons. element symbol: number of protons: number of electrons: ?

History Bookmarks Window Help arning < +660 pts /2400 Question 8 of 24 O Macmillan Learning > achieve.macmillanlearning.com M Assessment - General, Organic, and Biological Chemistry for Health Sciences a Tue Sep 3 9:44 PM Start Page Resources ? Hint Submit Answer A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons. element symbol: number of protons: number of electrons: ?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter1: The Atom In Modern Chemistry

Section: Chapter Questions

Problem 22P: The last “missing” element from the first six periods was promethium, which was finally discovered...

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Similar questions

In what way are isotopes of a given element always different? In what way(s) are they always the same?
For each of the isotopes in Exercise 21.1, determine the numbers of protons, neutrons, and electrons in a neutral atom of the isotope.
. The elements with atomic numbers of 93 or greater are referred to as the _________ elements.
The existence of isotopes violates one of the original ideas of Dalton’s atomic theory. Which one?
One of the best indications of a useful theory is that it raises more questions for further experimentation than it originally answered. How does this apply to Dalton’s atomic theory? Give examples.
The last “missing” element from the first six periods was promethium, which was finally discovered in 1947 among the fission products of uranium. Determine (a) the ratio of the number of neutrons in a 145Pm nucleus to the number of protons, and (b) the number of electrons in a single promethium atom.
Do the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare to the mass of the electron? Which particles make the greatest contribution W the mass of an atom? Which particles make the greatest contribution to the chemical properties of an atom?
Which of the following are isotopes of element X, the atomic number for which is 9: 919X, 920X, 189X, and 921X?
2.87 What is the heaviest element to have an atomic weight that is roughly twice its atomic number? What does this suggest must he true about the nuclei of atoms with higher atomic numbers?
2-102 An element consists of 90.51% of an isotope with a mass of 19.992 amu, 0.27% of an isotope with a mass of 20.994 amu, and 9.22% of an isotope with a mass of 21.990 amu. Calculate the average atomic mass and identify the element.
Reaction of 2.0 L of hydrogen gas with 1.0 L of oxygen gas yields 2.0 L of water vapor. All gases are at the same temperature and pressure. Show how these data support the idea that oxygen gas is a diatomic molecule. Must we consider hydrogen to be a diatomic molecule to explain these results?
2-27 If each atom in Problem 2-26 acquired two more neutrons, what element would each then be?