Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises: 56

Answer

a) 17 - Chlorine - Halogen b) 4 - Beryllium - Alkaline earth metal c) 63 - Europium - Lanthanide metal d) 72 - Hafnium - Transition metal e) 2 -Helium - Noble gas f) 92 - Uranium - Actinide metal g) 55 - Caesium - Alkali metals.

Work Step by Step

For names of the elements, refer to the periodic table. $\Longrightarrow$The 38 elements in groups 3 through 12 of the periodic table are called "transition metals." $\Longrightarrow$Any of the elements beryllium, magnesium, calcium, strontium, barium, and radium, occupying Group IIA (2) of the periodic table are called Alkaline earth metals. $\Longrightarrow$The Alkali metals are a group 1 (Except Hydrogen) in the periodic table consisting of the chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). $\Longrightarrow$Any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 18 of the periodic table are called noble gases. $\Longrightarrow$Any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table are called halogens. $\Longrightarrow$Any of the series of fifteen metallic elements from lanthanum to lutetium in the periodic table (atomic numbers 57–71). $\Longrightarrow$Any of the series of fifteen metallic elements from actinium (atomic number 89) to lawrencium (atomic number 103) in the periodic table.
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