valence electrons in cobalt (co)

• Posted by Joyy Mountise April 29, 2022 Filed in Other #valence electrons in cobalt (co)  150 views
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  Cobalt is an element of the fourth period of group VIII of the secondarysubgroup of the Periodic Table. Metal. The designation is Co. The serial number is 27.

  In the form of a simple substance, cobalt is a shiny white metal with a yellowish tinge. Compared to iron, cobalt is harder and more brittle. The density is 8.90g/cm3. The melting point is 1492 oC, the boiling point is 2960 Oc.

  Cobalt has two modifications. α-cobalt with a hexagonal densely packed lattice is stable up to 430oC, β—cobalt with a face-centered cubic lattice is stable above 430oC. You can read more about valence electrons in cobalt at the link.

  Valence of cobalt in compounds

  Cobalt is the twenty–seventh element of the Periodic Table of D.I. Mendeleev. He is in the fourth period in the VIII In the group. The nucleus of a cobalt atom contains 27 protons and 32 neutrons f (the mass number is 59). There are four energy levels in the cobalt atom, at which there are 27 electrons

  A little history:

  Non-ferrous metals have been mined in Saxony for a long time. Miners often mined seemingly silver ore, but they could not melt silver. And during smelting, the ore released gas, from which the workers were poisoned. Miners called such "unclean" ore "kobold". It was believed that the evil spirits of the dungeons (kobolds) harm miners, hide good ore and slip poisonous.

  Hence the origin of the name — cobalt. In this case, Nickel and our hero are brothers. Both got their names from pagan mountain spirits.