The elements, As, Xe, Fe, Li, B, Cl, Ba, P, I, Si has to be identified as metals, nonmetals, or metalloids. Concept Introduction: According to physical and chemical properties, the elements can be further divided into metals, non-metals and metalloids. In a group, the metallic character of an element increases from top to bottom whereas in a period, it decreases from left to right. Metals are elements that usually contain 1-3 outer shell electrons. Metals look shining and lustrous and are malleable and ductile. They are also good conductors of heat and electricity. They have low ionization energy and tend to lose electrons forming cations. They are most likely to form ionic compounds. Nonmetals are elements that usually contain 4-8 outer shell electrons. They cannot conduct heat and electricity and are brittle. Also they have high electron affinities and tend to gain electrons forming anions. They are most likely to form molecular compounds. Metalloids are elements having intermediate properties of metals and nonmetals. Comparing to metals, metalloids are poor conductors but under certain conditions they can act as electrical conductors. They look shining and lustrous like metals yet they are brittle like nonmetals. The classification elements in the periodic table as metals, nonmetals, or metalloids can be given as
The elements, As, Xe, Fe, Li, B, Cl, Ba, P, I, Si has to be identified as metals, nonmetals, or metalloids. Concept Introduction: According to physical and chemical properties, the elements can be further divided into metals, non-metals and metalloids. In a group, the metallic character of an element increases from top to bottom whereas in a period, it decreases from left to right. Metals are elements that usually contain 1-3 outer shell electrons. Metals look shining and lustrous and are malleable and ductile. They are also good conductors of heat and electricity. They have low ionization energy and tend to lose electrons forming cations. They are most likely to form ionic compounds. Nonmetals are elements that usually contain 4-8 outer shell electrons. They cannot conduct heat and electricity and are brittle. Also they have high electron affinities and tend to gain electrons forming anions. They are most likely to form molecular compounds. Metalloids are elements having intermediate properties of metals and nonmetals. Comparing to metals, metalloids are poor conductors but under certain conditions they can act as electrical conductors. They look shining and lustrous like metals yet they are brittle like nonmetals. The classification elements in the periodic table as metals, nonmetals, or metalloids can be given as
Definition Definition Change in energy of a neutral gaseous atom when an electron is added to the atom to form a negative ion.
Chapter 8, Problem 8.5QP
Interpretation Introduction
Interpretation:
The elements, As, Xe, Fe, Li, B,Cl, Ba, P, I, Si has to be identified as metals, nonmetals, or metalloids.
Concept Introduction:
According to physical and chemical properties, the elements can be further divided into metals, non-metals and metalloids.
In a group, the metallic character of an element increases from top to bottom whereas in a period, it decreases from left to right.
Metals are elements that usually contain 1-3 outer shell electrons. Metals look shining and lustrous and are malleable and ductile. They are also good conductors of heat and electricity. They have low ionization energy and tend to lose electrons forming cations. They are most likely to form ionic compounds.
Nonmetals are elements that usually contain 4-8 outer shell electrons. They cannot conduct heat and electricity and are brittle. Also they have high electron affinities and tend to gain electrons forming anions. They are most likely to form molecular compounds.
Metalloids are elements having intermediate properties of metals and nonmetals. Comparing to metals, metalloids are poor conductors but under certain conditions they can act as electrical conductors. They look shining and lustrous like metals yet they are brittle like nonmetals.
The classification elements in the periodic table as metals, nonmetals, or metalloids can be given as
What is the [OH⁻] of a 1.80 M solution of pyridine (C₅H₅N, Kb = 1.70 × 10⁻⁹)?
What is the percent ionization in a 0.260 M solution of formic acid (HCOOH) (Ka = 1.78 × 10⁻⁴)?
Determine the pH of solution of HC3H5O2 By constructing an ICE table writing the equilibrium constant expression, and using this information to determine the pH. The Ka of HC3H5O2 is 1.3 x 10-5