When a ß+ is emitted from an unstable nucleus, False a proton is ejected from the nucleus. Truea neutron is ejected from the nucleus. False the atomic number of the nucleus does not change. False a proton is transformed to a neutron. True the atomic number of the nucleus increases by 1. False the atomic number of the nucleus decreases by 1. True ✓a neutron is transformed to a proton. Submit Answer Incorrect. Tries 11/99 Previous Tries

Please answer 11 Part A and B

Londyn Takib Protons, Neutrons, and Electrons Practice Worksheet Use the periodic table to find the numbers of protons, neutrons, and electrons for atoms of the following elements. Name of Element Boron Sodium Gallium Copper Ytterbium Thallium Carbon Calcium Argon Element Symbol Tc Pb Ac B Y Mo Fm No H N Ba Si Mg Mass Number 11 24 89 98 207 227 204 259 12 Atomic Number 5 11 29 81 100 18 Protons 5 31 43 89 7 2 12 106 Neutrons 6 37 35 103 54 157 March 5 159 Electrons 5 39 70 56 2 14 12

< 4:13 Question 8 of 10 all - 51 Which of the following statements regarding a gamma ray is true? Submit A) It is less penetrating than a beta ray. C) It is composed of neutrons. B) It is not deflected by an electric field. D) It is less penetrating than an alpha ray. Tap here or pull up for additional resources E) None of these statements are true.

Learning Goal: Atoms with the same number of protons but different numbers of neutrons are called isotopes. Some elements only have one naturally occurring isotope, while others such as carbon have two or more. In a naturally occurring sample isotopes of each element are present in a certain percentage amount called the percent natural abundance. The mass number of an isotope is the sum of the number of protons and the number of neutrons for a particular isotope and is symbolized by A. A = number of protons + number of neutrons There are several different types of isotope notation. For example, a carbon isotope that has an atomic number of 6 and a mass number of 13 could be symbolized in any of the following ways: C, carbon-13, or C-13. tab Part A Enter the appropriate symbol for an isotope of potassium-39 corresponding to the isotope notation 4X. Express your answer as a chemical symbol using Isotope notation. View Available Hint(s) esc 7 caps lock Part B Complete previous part(s)…

Hw question 8

gen 13. Determine the number of neutrons for the following isotopes: A) Cr-53 Number of neutrons B) K-37 Number of neutrons