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Hace 1 día · Period: period 5: Block d-block: Electron configuration 4d 1 5s 2: Electrons per shell: 2, 8, 18, 9, 2: Physical properties; Phase at STP: solid: Melting point: 1799 K (1526 °C, 2779 °F) Boiling point: 3203 K (2930 °C, 5306 °F) Density (at 20° C) 4.469 g/cm 3: when liquid (at m.p.) 4.24 g/cm 3 : Heat of fusion: 11.42 kJ/mol ...
Hace 3 días · Period: period 6: Block d-block: Electron configuration 4f 14 5d 10 6s 2: Electrons per shell: 2, 8, 18, 32, 18, 2: Physical properties; Phase at STP: liquid: Melting point: 234.3210 K (−38.8290 °C, −37.8922 °F) Boiling point: 629.88 K (356.73 °C, 674.11 °F) Density (near r.t.) 13.546 g/cm 3 Triple point: 234.3156 K, 1.65×10 ...
Hace 3 días · Einsteinium is a synthetic chemical element; it has symbol Es and atomic number 99. It is a member of the actinide series and it is the seventh transuranium element. It was named in honor of Albert Einstein . Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.
Hace 2 días · Period: period 6: Block f-block: Electron configuration 4f 4 6s 2: Electrons per shell: 2, 8, 18, 22, 8, 2: Physical properties; Phase at STP: solid: Melting point: 1295 K (1022 °C, 1872 °F) Boiling point: 3347 K (3074 °C, 5565 °F) Density (at 20° C) 7.007 g/cm 3 when liquid (at m.p.) 6.89 g/cm 3 : Heat of fusion: 7.14 kJ/mol
- silvery white
- f-block groups (no number)
- 60
Hace 3 días · Period: period 5: Block p-block: Electron configuration 4d 10 5s 2 5p 4: Electrons per shell: 2, 8, 18, 18, 6: Physical properties; Phase at STP: solid: Melting point: 722.66 K (449.51 °C, 841.12 °F) Boiling point: 1261 K (988 °C, 1810 °F) Density (at 20° C) 6.237 g/cm 3: when liquid (at m.p.) 5.70 g/cm 3 : Heat of fusion: 17.49 ...
Hace 5 días · mercury (Hg), chemical element, liquid metal of Group 12 (IIb, or zinc group) of the periodic table. Properties, uses, and occurrence. Mercury was known in Egypt and also probably in the East as early as 1500 bce.
- The Editors of Encyclopaedia Britannica
Hace 2 días · Definition: Periodic Trend. A periodic trend is a specific pattern in the physical or chemical properties of the elements. Periodic trends may occur across a period, up or down a group, or from one corner of the periodic table to another corner.
