Astatine At (Element 85) of Periodic Table
85 At (Astatine) Appearance:Â Unknown, (Probably metallic) Mass number:Â 210 Atomic weight:Â 209.9871 g/mol Atomic number (Z):Â 85 […]
Astatine At (Element 85) of Periodic Table Read More »
PERIODIC TABLEÂ
Alkali Metals – The alkali metals are so reactive that they are generally found in nature combined with other elements. All of the alkali metals share similar characteristics and properties, such as their color, softness, and melting points.
Alkaline Earth Metals – Alkaline earth metals in their pure forms are generally shiny and silvery and are very reactive. They rarely occur in their pure form.
Transition metal – Transition metals are lustrous and malleable, silvery, hard, and good conductors of heat and electricity.
Post-Transition metal (Base Metal) – Post- transition metals are soft (or brittle), have poor mechanical strength, and have melting points lower than those of the transition metals. Being close to the metal-nonmetal border.
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Metalloid – Metalloids have a metallic appearance, but they are too brittle and only fair conductor of electricity. They behave mostly as nonmetals. They and their compound Used in alloys, catalysts, glasses, flame retardants, biological agents, Pyrotechnics, Optical storage and optoelectronics semiconductor, and electronics.
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Polyatomic Nonmetal – Polyatomic nonmetals shows more metallic character. They are solid, brittle and low conductivity , mostly semi-lustrous Semiconductors with electronegativity values.
Diatomic Nonmetal (Halogen) – They are generally highly Insulating, Highly electronegative, non-reflective gases, Semi-lustrous, and a semiconductor. All of the elements in this elite group are gases.
Noble gas – Noble gases are typically highly unreactive, It makes them very suitable in applications where reactions are not wanted.
Lanthanide – Elements found in the earth’s crust are called rare earth metals and Scientists referring to a lanthanide as a rare earth metal. They are used to make Strong magnets, Safety glasses etc..
Actinide – Some actinides are found in nature while others are man-made, They are all Radioactive.
Group 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
Period
1 |
1 | 2 | ||||||||||||||||
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||||||||
3 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | ||||||||||
4 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 |
5 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |
6 | 55 | 56 | 57-71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 |
7 | 87 | 88 | 89-103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 |
Lanthanide —-> | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | |||
Actinide —-> | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | |||
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85 At (Astatine) Appearance:Â Unknown, (Probably metallic) Mass number:Â 210 Atomic weight:Â 209.9871 g/mol Atomic number (Z):Â 85 […]
Astatine At (Element 85) of Periodic Table Read More »
86 Rn (Radon) Appearance:Â Colorless gas, Occasionally glows green or red in discharge tubes Mass number:Â 222 Atomic
Radon Rn (Element 86) of Periodic Table Read More »
87 Fr (Francium) Appearance:Â An intensely radioactive metal. Mass number:Â 223 Atomic weight:Â 223.0197 g/mol Atomic number (Z):Â
Francium Fr (Element 87) of Periodic Table Read More »
88 Ra (Radium) Appearance:Â Soft, shiny, Silvery white metallic Mass number:Â 226 Atomic weight:Â 226.0254 g/mol Atomic number(Z):Â
Radium Ra (Element 88) of Periodic Table Read More »
89 Ac (Actinium) Appearance:Â Soft, Silvery-white, glows in the dark with a pale blue light because intense radioactivity
Actinium Ac (Element 89) of Periodic Table Read More »
90 Th (Thorium) Appearance:Â Silvery, often with black tarnish Atomic weight:Â 232.0377 Atomic number (Z):Â 90 Electrons:Â 90
Thorium Th (Element 90) of Periodic Table Read More »
91 Pa (Protactinium) Appearance:Â Bright, Silvery metallic luster Mass number: 231 Atomic weight:Â 231.03588(2) g/mol Atomic number (Z):Â
Protactinium Pa (Element 91) of Periodic Table Read More »
92 U Uranium Appearance:Â Silvery gray metallic Mass number:Â 238 Atomic weight: Â 238.02891 g/mol Atomic number (Z): Â 92
Uranium U (Element 92) of Periodic Table Read More »
92 Np Neptunium Appearance:Â Silvery metallic Mass number: 237 Atomic weigth:Â 237.0482 g/mol Atomic number (Z):Â 93 Electrons:
Neptunium Np (Element 93) of Periodic Table Read More »
94 Pu Plutonium Appearance: Â Silvery white, Tarnishing to dark gray in air Mass number: Â 244 Atomic weight: Â 244.0642
Plutonium Pu (Element 94) of Periodic Table Read More »
95 Am (Americium) Appearance – Silvery white, Shiny Mass number – 243 Atomic number (Z) – 95 Atomic
Americium Am (Element 95) of Periodic Table Read More »
96 Cm (Curium) Appearance – Silvery metallic, glows purple in the dark (It tarnishes rapidly in air) Mass
Curium Cm (Element 96) of Periodic Table Read More »