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Chapter 8: Problem 5

Which of the following elements are metals, nonmetals, or metalloids? As, Xe, Fe, Li, B, Cl, Ba, \(\mathrm{P}, \mathrm{I}, \mathrm{Si}\)

Short Answer

Expert verified
Following classifications have been made: Metals - Fe, Li, Ba; Nonmetals - Xe, Cl, P, I; Metalloids - As, B, Si.

Step by step solution

01

Metals

Metals are located on the left side and the centre of the periodic table. They generally have high melting points, good conductivity of heat and electricity and are ductile and malleable. Among our elements, Fe, Li, and Ba are metals.
02

Nonmetals

Nonmetals are primarily located on the right side of the periodic table (excluding Hydrogen, which is on the left side). They are generally poor conductors of heat and electricity and have considerably lower melting points than metals. Among our elements, Xe, Cl, P, and I are nonmetals.
03

Metalloids

Metalloids, or semimetals, have properties that are intermediate between metals and nonmetals. They are found along the staircase line on the periodic table. Among our elements, As, B, and Si are metalloids.

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Most popular questions from this chapter

Explain why the electron affinity of nitrogen is approximately zero, while the elements on either side, carbon and oxygen, have substantial positive electron affinities.

Consider the first 18 elements from hydrogen to argon. Would you expect the atoms of half of them to be diamagnetic and half of them to be paramagnetic? Explain.

Write chemical formulas for oxides of nitrogen with the following oxidation numbers: \(+1,+2,+3,+4,\) +5. (Hint: There are two oxides of nitrogen with +4 oxidation number.)

Why do elements that have high ionization energies also have more positive electron affinities? Which group of elements would be an exception to this generalization?

In general, atomic radius and ionization energy have opposite periodic trends. Why?
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