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Chapter 6: Q74E. (page 337)

Atoms of which group in the periodic table have a valence shell electron configuration of\({\bf{n}}{{\bf{s}}^{\bf{2}}}\)?

Short Answer

Expert verified

Group 2 (alkaline earth metals) has the electron configuration \(n{s^2}\).

Step by step solution

01

Electronic configuration

The regular arrangement of electrons in the atomic orbitals is called electronic configuration. The physical and chemical properties of the elements are the periodic functions of their atomic numbers or electronic configurations.

The sum of the superscripts in the electronic configuration of an element represents the total number of valence electrons in it.

The n value in the electronic configuration represents the shell number.

02

Group 2 elements

The given general electronic configuration is\(n{s^2}\).

The total number of valence electrons in it is two.

Thus, the group number is IIA or group 2. (alkaline earth metals).

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Most popular questions from this chapter

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)?

Question:Which atom would be expected to have a half-filled 6psubshell?

How are the Bohr model and the Rutherford model of the atom similar? How are they different?

Based on their positions in the periodic table, list the following ions in order of increasing radius:\({{\bf{K}}^ + },{\rm{ }}{\bf{C}}{{\bf{a}}^{{\bf{2}} + }},{\rm{ }}{\bf{A}}{{\bf{l}}^{{\bf{3}} + }},{\rm{ }}{\bf{S}}{{\bf{i}}^{{\bf{4}} + }}.\)

Question:Which of the subshells described in the previous question contain degenerate orbitals? How many degenerateorbitals are in each?
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