1 Isotopes and their Abundances Mendeleev the Founder of Periodic - - PDF document

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Jun 23, 2023 271 likes •327 views

Periodicity of Element Properties Chapter 3 Atomic Structure and the Periodic Table Music consists of a series of tones that build octave after octave. Similarly, elements have properties that recur period after period.

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Chapter 3-1 Chemistry 120 Online LA Tech

Chapter 3 Atomic Structure and the Periodic Table

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Periodicity of Element Properties

→ Music consists of a series

f tones that build octave

after octave. Similarly, elements have properties that recur period after period.

Chapter 3-3 Chemistry 120 Online LA Tech

The protons and neutrons of an atom are found in the central nuclear region, or nucleus, and the electrons are found in an electron cloud outside the nucleus.

Nuclear Atom

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Atomic and the Subatomic Particles

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Chapter 3-5 Chemistry 120 Online LA Tech

Isotopes and their Abundances

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Mendeleev the Founder of Periodic Table

→

Mendeleev constructed a periodic table as part of his effort to systemize chemistry.

Edgar Fahs Smith Collection, University of Pennsylvania Library Chapter 3-7 Chemistry 120 Online LA Tech

Modern Periodic Table

The periodic table of the elements is a graphical way to show relationships among the elements.

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Very Long form of Periodic table

In this periodic table, elements 58 through 71 and 90 through 103 are shown in their proper positions.

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Metals and Non-metals

(a) Some familiar metals are

aluminum, lead, tin, and zinc. (b) Some familiar nonmetals are sulfur, phosphorus, and bromine.

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Differences between Metals/Non-metals

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Boarder Line between Metals

This portion of the periodic table shows the dividing line between metals and nonmetals.

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The number of subshells within a shell is equal to the shell number.

Electronic Shells sn Sub-shells

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Atomic Orbitals in a Sub-Shell

An s orbital has spherical shape; a p orbital has two lobes; a d orbital has four lobes; and an f orbital has eight lobes.

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p- atomic Orbitals and their Orientation in Space

Orbitals within a subshell differ mainly in orientation.

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Shell, Sub-shell and Orbital Arrangement

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The Order of Filling of Various Atomic Subs-hells

The order of filling various electron subshells. Subshellsof different shells “overlap.”

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Filling Order of Atomic Orbitals

The order of filling various electron subshells with electrons follows the same

rder given by the arrows in

this diagram.

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Color comes from Electron Jumps

The different colors of fireworks result when heat excites the electrons of different kinds of metal atoms.

William S. Helsel/Getty Images Chapter 3-19 Chemistry 120 Online LA Tech

Orbital Blocks of the Periodic Table

Electron configuration and the positions

f the elements in

the periodic table.

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Element Types and Electronic Configuration

A classification scheme for the elements based on their electron configuration s.