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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

Americium, Am, is a radioactive element isolated from spent fuel in nuclear reactors and used in home smoke detectors. Depict its electron configuration using noble gas and spdf notations.

Interpretation Introduction

Interpretation:

The electron configuration of Americium (Am) has to be depicted 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 is 95. The first 86 electrons are identified by the symbol of the Radon (Rn). The remaining 9 electrons are assigning to the 5f, 7s sub-shells. Hence the Hund’s rule is followed in the box notation.

AtomicnumberofAmericium(Am)= 95Complete (spdf)notationof(Am)=Am =1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f76d07s2Orbital filling method=1s22s22p63s23p63d104s24p64d105s25p6

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