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Chapter 6: Q81E (page 338)

Compare both the numbers of protons and electrons present in each to rank the following ions in order of

increasing radius:\({\bf{A}}{{\bf{s}}^{{\bf{3}}--}},{\rm{ }}{\bf{B}}{{\bf{r}}^--},{\rm{ }}{{\bf{K}}^ + },{\rm{ }}{\bf{M}}{{\bf{g}}^{{\bf{2}} + }}\).

Short Answer

Expert verified

\(M{g^{2 + }} < {\rm{ }}{K^ + } < {\rm{ }}B{r^ - } < {\rm{ }}A{s^{3 - }}\;\;\)

Step by step solution

01

Atomic radius

The atomic radius increases as we go from right to left in the periodic table. The atomic radius increases going from top to bottom (increases in n energy levels and the distance from the nucleus.

02

Listing the given elements in order of increasing atomic radius

When losing an electron, the atom shrinks closer to the nucleus. Hence, arranging the elements as follows:

\(M{g^{2 + }} < {\rm{ }}{K^ + } < {\rm{ }}B{r^ - } < {\rm{ }}A{s^{3 - }}\;\;\)

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Most popular questions from this chapter

Which of the following atoms and ions is (are) isoelectronic with\({{\bf{S}}^{{\bf{2}} + }}:{\rm{ }}{\bf{S}}{{\bf{i}}^{4 + }}{\rm{ ,}}{\bf{C}}{{\bf{l}}^{{\bf{3}} + }},{\rm{ }}{\bf{Ar}},{\rm{ }}{\bf{A}}{{\bf{s}}^{{\bf{3}} + }},{\rm{ }}{\bf{Si}},{\rm{ }}{\bf{A}}{{\bf{l}}^{{\bf{3}} + }}\)?

Write a set of quantum numbers for each of the electrons with an nof 4 in a Se atom

Question:Consider the orbitals shown here in the outline.

(a) What is the maximum number of electrons contained in an orbital of type (x)? Of type (y)? Of type (z)?

(b) How many orbitals of type (x) are found in a shell withn= 2? How many of type (y)? How many of type (z)?

(c) Write a set of quantum numbers for an electron in an orbital of type (x) in a shell withn= 4. Of an orbital of type

(y) in a shell withn= 2. Of an orbital of type (z) in a shell withn= 3.

(d) What is the smallest possiblenvalue for an orbital of type (x)? Of type (y)? Of type (z)?

(e) What are the possiblelandmlvalues for an orbital of type (x)? Of type (y)? Of type (z)?

Which ion with a +2 charge has the electron configuration\({\bf{1}}{{\bf{s}}^{\bf{2}}}{\bf{2}}{{\bf{s}}^{\bf{2}}}{\bf{2}}{{\bf{p}}^{\bf{6}}}{\bf{3}}{{\bf{s}}^{\bf{2}}}{\bf{3}}{{\bf{p}}^{\bf{6}}}{\bf{3}}{{\bf{d}}^{{\bf{10}}}}{\bf{4}}{{\bf{s}}^{\bf{2}}}{\bf{4}}{{\bf{p}}^{\bf{6}}}{\bf{4}}{{\bf{d}}^{\bf{5}}}\)? Which ion with a +3 charge has this configuration?

Calculate the wavelength of a softball with a mass of 100 g traveling at a velocity of 35 m s–1, assuming that it can be modeled as a single particle.
See all solutions

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