University:
Indiana University East
Course:
CHEM-C 105 | Principles of Chemistry I
Academic year:

2019
Views:

144

Pages:

1
Author:

Jerynclessyncpa5

Name Date Use with textbook pages 64–67. The number game with atoms and ions 1. Complete the following sentences using the terms in parentheses. (a) The atomic Number (number/mass) of an element is the same as the number of protons in the nucleus of an atom. atom (b) An protons as electrons. (atom/ion) of an element has the same number of (c) A positively charged ion has (d) A negatively charged ion has (lost/gained) electrons. lost (lost/gained) electrons. gained 2. Complete the following table. Some answers are provided to help guide you. You can refer to the Bohr model chart on page 32 and the periodic table on page 202. Element name Atomic number Ion charge Atom or ion? beryllium 4 2+ ion Sodium 11 0 atom Argon chlorine 18 17 7 Nitrogen calcium Sulfur Aluminum 0 atom 3− 2− 16 3 13 atom 0 20 Lithium 0 ion atom Number of protons 4 ion 3+ ion 2 11 11 18 18 17 17 10 7 20 16 ion + Number of electrons 3 20 18 2 13 10