(a)
Interpretation: The classification of the following elements as metals or nonmetals is to be done.
Mg, Ti, Au, Bi, Si, Ge, B, At, Rn, Eu, Am, and Br
Concept introduction: The periodic table is composed of different types of elements, such as metals, nonmetals and metalloids. The elements that readily lose their valence electrons and obtain a positive charge are described as metals. The chemical properties are the outcome of how metals remove their electrons rapidly to form positively charged cations. They have a distinctive metallic lustre, are good conductors of electrity as well as heat.
On the other side, nonmetals are the elements that accept electrons in their valence shell and obtain a negative charge. They are not good conductors of electrity as well as heat.
(b)
Interpretation: An explanation regarding the elements called metalloids which show intermediate properties between metals and nonmetals is to be stated. The elements in the periodic table which are expected to be metalloid are to be identified.
Concept introduction:
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Chemical Principles
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- Your friend tells you about an article that he read in a tabloid that reported the discovery of a new form of carbon containing eight protons in the nucleus of its atoms. He claims that scientists are eager to explore the properties of this new form of carbon. What is wrong with the tabloid's claim? a. Nothing. The claim is believable. b. The claim must be false because an atom with eight protons would be oxygen, which is already known. c. The claim must be false because all forms of carbon are already known.arrow_forwardDo the proton and the neutron have exactly the same mass? How do the masses of the proton and the neutron compare to the mass of the electron? Which particles make the greatest contribution W the mass of an atom? Which particles make the greatest contribution to the chemical properties of an atom?arrow_forwardGiven that the periodic table is an organizational scheme for the elements, what might be some other logical ways in which to group the elements that would provide meaningful chemical information in a periodic table of your own devising?arrow_forward
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