The last “missing” element from the first six periods waspromethium, which was finally discovered in 1947 amongthe fission products of uranium. Determine (a) the ratio ofthe number of neutrons in a 145Pm nucleus to the numberof protons, and (b) the number of electrons in a singlepromethium atom.

Q: Iodine-131 undergoes radioactive decay to form anisotope with 54 protons and 77 neutrons. What…

A: Iodine- 131 has atomic number(Z) of 53. Because in a neutral (uncharged) atom, number of…

Q: Determine the charge and made of nuclei in amu made up of the following: 6 protons and 6 neutrons…

A: 1) The nuclei is having 6 protons and 6 neutrons Since the charge of proton is +1 and charge on…

Q: Among these numbers, If each atom acquired two more neutrons, what element would each of these be?…

A: There are basically 3 sub-particles present in an atom-  1- electron 2- proton 3- neutron

Q: What notations are commonly used to specify isotopes?What do each of the numbers in these symbols…

A: ANSWER

Q: Write the symbol for each isotope in the form AZX.(a) U-235(b) V-52(c) P-32(d) Xe-144

A: Write the symbol for each isotope in the form AZX.(a) U-235(b) V-52(c) P-32(d) Xe-144

Q: The particle given by the following notation 63 Cu2+ Contains protons, neutrons, and electrons…

A: Step 1:

Q: Where are elements heavier than helium created?

A:

Q: A neutron and a proton combine to form a nucleus why does the mass. Of the nucleus differ from the…

A: Given: A neutron and a proton combine to form a nucleus. And the mass of the nucleus differ from the…

Q: Given the only naturally occurring isotope of aluminum is Al-27, determine its mass from the…

A: Isotopes of an element are the ones which have the same atomic number but different mass number.…

Q: How many protons, neutrons and electons are in 31P3-

A: The element  31P3- It is Phosphorus and having atomic number 15 and atomic mass 31.

Q: greatest number of stable isotopes? Ne, F, Na

A: The objective is to determine the greatest number stable of isotopes.

Q: Image a chemist was trying to create a stable isotope with 60 protons and a mass number of 155.…

A: The nucleus consists of protons and protons that are responsible for the overall mass of the atom.…

Q: Sr-90 has [ Select ] neutrons than Y-91

A:

Q: Gallium occurs naturally as 69Ga and 71Ga. Given the mass and abundance of gallium-69 (68.92 amu…

A: Given, Gallium occurs naturally as 69Ga and 71Ga and mass and abundance of gallium-69 is 68.92 amu…

Q: Determine the AE of Zinc-65 that emitted a proton (¹₁P). The mass of Zinc-65 is 64.55961 amu and the…

A:

Q: Write the nuclide notation, including charge if applicable, for atoms with the following…

A: (a)

Q: (1) The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above.…

A: We have unstable nuclide Strontium-81, which undergoes radioactive decay. We need to discuss the…

Q: Tell the number of protons, neutrons, and electrons in the following isotopes. (a) 54Fe (b) 23Na…

A: Atomic Number = No. of Protons(P) = No of electrons(e)Mass number = No. of Protons + No. of…

Q: What is the mass number of xenon-127?

A:

Q: two protons and two neutrons are removed from the nucleus of an neon-20 atom, a nucleus of which…

A:

Q: which particle corresponds to isotope 3? 183Mt, 183W, or 109W

A: Isotopes are atoms that contain same number of protons but different number of neutrons. As a result…

Q: 1. Indi cate of protons and nevutrons in the following nuclei: the number a) 5 Mn 22

A:

Q: For the following isotopes that have missing information, fill in the missing information to…

A: Isotopes are variants of a particular chemical element which differ in neutron number, and…

Q: We must first calculate the mass defect (Am) for 56F.. Since atomic masses (which include the…

A:

Q: If an atom of Uranium, Element 92, were to absorb an Alpha particle (comprising two protons and two…

A: For a balanced nuclear reaction sum of mass number and sum of atomic numbers must be same on both…

Q: Which of the following particles has a mass of -0 amu and a charge of 1-?

A: The question is asking us to identify a particle that has a mass of 0 atomic mass units (amu) and a…

Q: Atomic # for uranium is 92 how many protons, electrons, neutrons in isotope U- 96?

A: Given that, Atomic number of U is 92.

Q: Write a complete nuclear symbol for a species that has 46 protons, 61 neutrons and 43 electrons:

A:

Q: 244Pu undergoes radioactive decay, emitting 4 alpha particles and 5 beta particles. What is the…

A: An alpha particle is equivalent to a Helium atom A beta particle is similar to an electron

Q: Which of the following nuclides have magic numbers of both protons and neutrons: (a) helium-4, (b)…

A: Magic number The nuclei with 2, 8, 20, 28, 50, 82, and 126 neutrons or protons are particularly…

Q: Name the isotopes of hydrogen. Which one (or more) is (are) radioactive?

A: Here, we are asked to write the name of the isotopes of hydrogen andwhich one (or more) is (are)…

Q: Indi cate of protons and neutrons in the following nuclei: the number b) 201 Hg

A:

Q: 209Bi is the heaviest stable isotope of any element. How many protons and neutrons are present in…

A: The given data contains atomic mass of Bismuth is 209.

Q: sequence of the unstable radioactive nucleus lead-212 can decay into a stable nucleus

A: If lead-212(Pb-212) undergoes two consecutive beta decay and then one alpha decay , it will lead…

Q: 7. In cach pair of isotopes shown, indicate which one you would expect to be radioactive and why. a)…

A: Isotope is defined as same number of proton and electron but different number of neutron. For…

Q: Nuclei with the same number of neutrons but different mass numbers are called isotones. Write the…

A: Nuclei with the same number of neutrons but different mass numbers are called isotones. Mass number…

Q: The correct way to write the isotopes 2Na, AI, Kr, 19r in hyphenated form is sodium-24, aluminum-29,…

A: The correct answer about hyphen notations are given below

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.