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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Use noble gas and spdf notations to depict electron configurations for the following metals of the third transition series.

(a) Tantalum, Ta. The metal and its alloys resist corrosion and are often used in surgical and dental tools.

(b) Platinum, Pt. This metal was used by pre-Columbian Indians in jewelry. Now it is still used in jewelry but it is also the basis for anti-cancer drugs and catalysts (such as those in automobile exhaust systems).

a)

Interpretation Introduction

Interpretation:

Tantalum (Ta) electronic configuration has to be predicted using noble gas and spdf notation.

Concept Introduction:

Electronic configuration: The electronic configuration is the distribution of electrons of a given molecule or respective atoms in atomic or molecular orbitals.

The important there rules for electronic configuration given below:

Aufbau principle: This rule statues that ground state of an atom or ions electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. If consider the 1s shell is filled the 2s subshell is occupied.

Hund's Rule: The every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

Pauli exclusion rule: an atomic orbital may describe at most two electrons, each with opposite spin direction.

Explanation
  1. 1. The noble gas notation: The atomic number of Tantalum is 73. The first 54 electrons are identified by the symbol of the Xenon (Xe), a noble gas. The remaining 19 electrons are assigning to the 4f, 5d, and 6s sub-shells. Hence the Hund’s rule is followed in the box notation.

AtomicnumberofTantalum(Ta)=73Complete (spdf)notationof(Ta)=1s22s22p63s23p63d104s24p64d105s25p64f145d36s2Orbital filling method=1s22s22p63s23p63d104s24p6

b)

Interpretation Introduction

Interpretation:

The electronic configuration of Platinum has to be derived using noble gas and spdf notations.

Concept Introduction:

Electronic configuration: The electronic configuration is the distribution of electrons of a given molecule or respective atoms in atomic or molecular orbitals.

The important there rules for electronic configuration given below:

Aufbau principle: This rule statues that ground state of an atom or ions electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. If consider the 1s shell is filled the 2s subshell is occupied.

Hund's Rule: The every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

Pauli exclusion rule: an atomic orbital may describe at most two electrons, each with opposite spin direction.

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