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In: Chemistry

Discuss the relationship between the location of an atom in the periodic table and its electron...

Discuss the relationship between the location of an atom in the periodic table and its electron configuration.

Solutions

Expert Solution

Ans- Electron configuration can be described as how electrons are assembled within the orbitals shells and subshells of an atom. It is important to understand what an electron is in order to fully understand the electron configuration. An electron is a sub atomic particle that is associated with a negative charge. Electrons are found outside of the nucleus, as opposed to neutrons (particles with neutral charge,) and protons (particles with positive charge.) Furthermore, electrons are associated with energy, more specifically quantum energy, and exemplify wave-like and particle-like characteristics. The word configuration simply means the arrangement of something. Therefore electron configuration in straightforward language means the arrangement of electrons.

Introduction

In general when filling up the electron diagram, it is customary to fill the lowest energies first and work your way up to the higher energies. Principles and rules such as the Pauli exclusion principle, Hund’s rule, and the Aufbau process are used to determine how to properly configure electrons. The Pauli exclusion rule basically says that at most, 2 electrons are allowed to be in the same orbital. Hund’s rule explains that each orbital in the subshell must be occupied with one single electron first before two electrons can be in the same orbital. Lastly, the Aufbau process describes the process of adding electron configuration to each individualized element in the periodic table. Fully understanding the principles relating to electron configuration will promote a better understanding of how to design them and give us a better understanding of each element in the periodic table. How the periodic table was formed has an intimate correlation with electron configuration. After studying the relationship between electron configuration and the period table, it was pointed out by Niels Bohr that electron configurations are similar for elements within the same group in the periodic table. Groups occupy the vertical rows as opposed to a period which is the horizontal rows in the table of elements.

S, P, D, and F Blocks

  • S block: The S block in the periodic table of elements occupies the alkali metals and alkaline earth metals, also known as groups 1 and 2. Helium is also part of the S block. The principal quantum number “n” fills the s orbital. There is a maximum of two electrons that can occupy the s orbital.
  • P Block: The P block contains groups 13, 14, 15, 16, 17, and 18, with the exception of Helium. (Helium is part of the S block.) The principal quantum number “n” fills the p orbital. There is a maximum of six electrons that can occupy the p orbital.
  • D Block: The D block elements are found in groups 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 of the periodic table. The D block elements are also known as the transition metals. The d orbital is filled with the electronic shell “n-1.” There is a maximum of ten electrons that can occupy the d orbital.
  • F Block: The F block elements are the lanthanides and actinides. The F orbitals of the electron shell are filled with “n-2.” There is a maximum of fourteen electrons that can occupy the f orbital.
  • electronic configuration and elements-
  • NUMBER ELEMENT ELECTRON CONFIGURATION
    1 Hydrogen 1s1
    2 Helium 1s2
    3 Lithium [He]2s1
    4 Beryllium [He]2s2
    5 Boron [He]2s22p1
    6 Carbon [He]2s22p2
    7 Nitrogen [He]2s22p3
    8 Oxygen [He]2s22p4
    9 Fluorine [He]2s22p5
    10 Neon [He]2s22p6
    11 Sodium [Ne]3s1
    12 Magnesium [Ne]3s2
    13 Aluminum [Ne]3s23p1
    14 Silicon [Ne]3s23p2
    15 Phosphorus [Ne]3s23p3
    16 Sulfur [Ne]3s23p4
    17 Chlorine [Ne]3s23p5
    18 Argon [Ne]3s23p6
    19 Potassium [Ar]4s1
    20 Calcium [Ar]4s2
    21 Scandium [Ar]3d14s2
    22 Titanium [Ar]3d24s2
    23 Vanadium [Ar]3d34s2
    24 Chromium [Ar]3d54s1
    25 Manganese [Ar]3d54s2
    26 Iron [Ar]3d64s2
    27 Cobalt [Ar]3d74s2
    28 Nickel [Ar]3d84s2
    29 Copper [Ar]3d104s1
    30 Zinc [Ar]3d104s2
    31 Gallium [Ar]3d104s24p1
    32 Germanium [Ar]3d104s24p2
    33 Arsenic [Ar]3d104s24p3
    34 Selenium [Ar]3d104s24p4
    35 Bromine [Ar]3d104s24p5
    36 Krypton [Ar]3d104s24p6
    37 Rubidium [Kr]5s1
    38 Strontium [Kr]5s2
    39 Yttrium [Kr]4d15s2
    40 Zirconium [Kr]4d25s2
    41 Niobium [Kr]4d45s1
    42 Molybdenum [Kr]4d55s1
    43 Technetium [Kr]4d55s2
    44 Ruthenium [Kr]4d75s1
    45 Rhodium [Kr]4d85s1
    46 Palladium [Kr]4d10
    47 Silver [Kr]4d105s1
    48 Cadmium [Kr]4d105s2
    49 Indium [Kr]4d105s25p1
    50 Tin [Kr]4d105s25p2
    51 Antimony [Kr]4d105s25p3
    52 Tellurium [Kr]4d105s25p4
    53 Iodine [Kr]4d105s25p5
    54 Xenon [Kr]4d105s25p6
    55 Cesium [Xe]6s1
    56 Barium [Xe]6s2
    57 Lanthanum [Xe]5d16s2
    58 Cerium [Xe]4f15d16s2
    59 Praseodymium [Xe]4f36s2
    60 Neodymium [Xe]4f46s2
    61 Promethium [Xe]4f56s2
    62 Samarium [Xe]4f66s2
    63 Europium [Xe]4f76s2
    64 Gadolinium [Xe]4f75d16s2
    65 Terbium [Xe]4f96s2
    66 Dysprosium [Xe]4f106s2
    67 Holmium [Xe]4f116s2
    68 Erbium [Xe]4f126s2
    69 Thulium [Xe]4f136s2
    70 Ytterbium [Xe]4f146s2
    71 Lutetium [Xe]4f145d16s2
    72 Hafnium [Xe]4f145d26s2
    73 Tantalum [Xe]4f145d36s2
    74 Tungsten [Xe]4f145d46s2
    75 Rhenium [Xe]4f145d56s2
    76 Osmium [Xe]4f145d66s2
    77 Iridium [Xe]4f145d76s2
    78 Platinum [Xe]4f145d96s1
    79 Gold [Xe]4f145d106s1
    80 Mercury [Xe]4f145d106s2
    81 Thallium [Xe]4f145d106s26p1
    82 Lead [Xe]4f145d106s26p2
    84 Polonium [Xe]4f145d106s26p4
    85 Astatine [Xe]4f145d106s26p5
    86 Radon [Xe]4f145d106s26p6
    87 Francium [Rn]7s1
    88 Radium [Rn]7s2
    89 Actinium [Rn]6d17s2
    90 Thorium [Rn]6d27s2
    91 Protactinium [Rn]5f26d17s2
    92 Uranium [Rn]5f36d17s2
    93 Bismuth [Xe]4f145d106s26p3
    93 Neptunium [Rn]5f46d17s2
    94 Plutonium [Rn]5f67s2
    95 Americium [Rn]5f77s2
    96 Curium [Rn]5f76d17s2
    97 Berkelium [Rn]5f97s2
    98 Californium [Rn]5f107s2
    99 Einsteinium [Rn]5f117s2
    100 Fermium [Rn]5f127s2
    101 Mendelevium [Rn]5f137s2
    102 Nobelium [Rn]5f147s2
    103 Lawrencium [Rn]5f147s27p1
    104 Rutherfordium [Rn]5f146d27s2
    105 Dubnium *[Rn]5f146d37s2
    106 Seaborgium *[Rn]5f146d47s2
    107 Bohrium *[Rn]5f146d57s2
    108 Hassium *[Rn]5f146d67s2
    109 Meitnerium *[Rn]5f146d77s2
    110 Darmstadtium *[Rn]5f146d97s1
    111 Roentgenium *[Rn]5f146d107s1
    112 Copernium *[Rn]5f146d107s2
    113 Ununtrium *[Rn]5f146d107s27p1
    114 Flerovium *[Rn]5f146d107s27p2
    115 Ununpentium *[Rn]5f146d107s27p3
    116 Livermorium *[Rn]5f146d107s27p4
    117 Ununseptium *[Rn]5f146d107s27p5
    118 Ununoctium *[Rn]5f146d107s27p6

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