ue False Elements of the same group have simīlar physical and chemical properties. There are more nonmetallic elements than metallic elements. The reactivity of the alkali metals increases going down the group. Fluorine, iodine, and chlorine have similar physical and chemical properties. Calcium is a member of the alkaline earth family. Iron belongs to the alkali metal family. Radon belongs to the halogen family. Platinum is in the group metals and in the subgroup transition metals. An atom of oxygen has more valence electrons than lithium. An atom of aluminum has 5 valence electrons in its outer most energy shell. Helium has 8 valence electrons. A horizontal row is known as a period on the periodic table. Group 15 can also be expressed as group 5A. Metalloids have properties of both metals and nonmetals and are considered semiconductors.

ue False Elements of the same group have simīlar physical and chemical properties. There are more nonmetallic elements than metallic elements. The reactivity of the alkali metals increases going down the group. Fluorine, iodine, and chlorine have similar physical and chemical properties. Calcium is a member of the alkaline earth family. Iron belongs to the alkali metal family. Radon belongs to the halogen family. Platinum is in the group metals and in the subgroup transition metals. An atom of oxygen has more valence electrons than lithium. An atom of aluminum has 5 valence electrons in its outer most energy shell. Helium has 8 valence electrons. A horizontal row is known as a period on the periodic table. Group 15 can also be expressed as group 5A. Metalloids have properties of both metals and nonmetals and are considered semiconductors.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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