Table of Contents
What are the chemical characteristics of cobalt?
Chemical properties of cobalt – Health effects of cobalt – Environmental effects of cobalt
| Atomic number | 27 |
|---|---|
| Electronegativity according to Pauling | 1.8 |
| Density | 8.9 g.cm-3 at 20°C |
| Melting point | 1495 °C |
| Boiling point | 2927 °C |
What are some physical and chemical properties of cobalt?
Cobalt has a melting point of 1495°C, boiling point of 2870°C, specific gravity of 8.9 (20°C), with a valence of 2 or 3. Cobalt is a hard, brittle metal. It is similar in appearance to iron and nickel. Cobalt has a magnetic permeability around 2/3 that of iron.
What type of chemical bond is cobalt?
Answer: Ionic bonds are between metals and non metals, but solid cobalt does not have a non metal, eliminating choice 4 as well. Metallic bonds are bonds between metals, therefore the answer is (3) metallic.
What are 5 physical properties of cobalt?
Properties Of Cobalt
- It is a hard ferromagnetic, silver-white, lustrous, brittle element.
- It is stable in air and does not react with water.
- Like other metals, it can also be magnetized.
- With dilute acids, it reacts slowly.
- The metal melts at 1495 °C and boils at 2927 °C.
What are the properties and uses of cobalt?
Uses and properties It is magnetic. Cobalt, like iron, can be magnetised and so is used to make magnets. It is alloyed with aluminium and nickel to make particularly powerful magnets. Other alloys of cobalt are used in jet turbines and gas turbine generators, where high-temperature strength is important.
What is cobalt mainly used for?
Cobalt is primarily used in lithium-ion batteries, and in the manufacture of magnetic, wear-resistant and high-strength alloys. The compounds cobalt silicate and cobalt(II) aluminate (CoAl2O4, cobalt blue) give a distinctive deep blue color to glass, ceramics, inks, paints and varnishes.
Is cobalt a covalent bond?
A covalent bond is equal electron sharing between two bonded atoms. A polar covalent bond is unequal electron sharing between two bonded atoms. Cobalt and bromine, ΔEN = 0.9, polar covalent. Nickel and oxygen, ΔEN = 1.6, polar covalent.
What are the unique properties of cobalt?
What are some chemical characteristics of cobalt?
Chemical properties of Cobalt 1. Oxidized high cobalt Inorganic compound, which is a black oxide of cobalt, is generally used for the coloring of… 2. High cobalt hydroxide
What are some interesting facts about the element cobalt?
Cobalt is a natural magnet. Under normal conditions, Cobalt is a hard, brittle metal with a bluish-white color. Cobalt is one of the few elements that are naturally magnetic. As a metal that is easily magnetized, Cobalt retains its magnetism at high temperatures.
How hard is cobalt?
Atomic Symbol: Co
What is the reactivity of cobalt?
Cobalt is a moderately reactive element. It combines slowly with oxygen in the air, but does not catch fire and burn unless it is in a powder form. It reacts with most acids to produce hydrogen gas. It does not react with water at room temperatures.