Locate each of the following elements in the periodic table; give its name and atomic number, and indicate whether it is a metal, metalloid, or nonmetal: (a) Hg (b) At (c) Mo (d) W (e) Sn (f) V (g) K.

Name: Chemistry: The Central Science
Author: Brown
ISBN: 9780134414232

검증된 단계별 안내

Step 1: Identify the element symbol 'Hg' and locate it on the periodic table. Determine its name, atomic number, and classification as a metal, metalloid, or nonmetal.

Step 2: Identify the element symbol 'At' and locate it on the periodic table. Determine its name, atomic number, and classification as a metal, metalloid, or nonmetal.

Step 3: Identify the element symbol 'Mo' and locate it on the periodic table. Determine its name, atomic number, and classification as a metal, metalloid, or nonmetal.

Step 4: Identify the element symbol 'W' and locate it on the periodic table. Determine its name, atomic number, and classification as a metal, metalloid, or nonmetal.

Step 5: Identify the element symbol 'Sn' and locate it on the periodic table. Determine its name, atomic number, and classification as a metal, metalloid, or nonmetal.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Periodic Table Organization

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties. Elements are arranged in rows (periods) and columns (groups), with metals typically found on the left and center, nonmetals on the right, and metalloids along the dividing line. Understanding this layout is essential for identifying elements and their classifications.

Classification of Elements

Elements are classified into three main categories: metals, metalloids, and nonmetals. Metals are generally good conductors of heat and electricity, malleable, and ductile. Nonmetals are poor conductors and can be gases or brittle solids at room temperature, while metalloids exhibit properties of both metals and nonmetals. This classification helps predict the behavior of elements in chemical reactions.

Atomic Number

The atomic number of an element is the number of protons in its nucleus, which determines its identity and position in the periodic table. It also indicates the number of electrons in a neutral atom, influencing the element's chemical properties. For example, knowing the atomic number allows one to quickly find the element's name and its classification as a metal, metalloid, or nonmetal.

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