Answer. Tungsten and Bismuth are metals which are poor conductors of electricity. There are many, but some include Aluminum, Bismuth, Gallium, Indium, Lead, Thallium, Tin, Ununhexium, Ununpentium, Ununquadium, and Ununtrium.

Silver Conductivity

The body is merely one large machine full of circuitry and electricity. Since practically 70% of the body is made up of water, it is considered to be a good conductor of electricity on average.

Brass however – which contains copper – is far less conductive because it is made up of additional materials that lower its conductivity, making it unsuitable for electrical purposes.

Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators.

Bismuth

There is no metal that does not conduct electricity entirely, but there are some metals that are less effective conductors than others. The most effective conductor of electricity is pure gold, closely followed by pure copper and pure silver.

Copper

Graphite

Carbon is a solid non-metal element. Pure carbon can exist in very different forms. The most common two are diamond and graphite….Diamond and graphite.

Carbon itself does not conduct electricity, but its allotrope graphite does. This is because graphite has a “free” electron in its outer shell that allows it to conduct some electricity. Metals have many free electrons and therefore are much better conductors of electricity.

Properties

There are three main types of metals ferrous metals, non ferrous metals and alloys.

The chemical element Calcium (Ca), atomic number 20, is the fifth element and the third most abundant metal in the earth’s crust. The metal is trimorphic, harder than sodium, but softer than aluminium. A well as beryllium and aluminium, and unlike the alkaline metals, it doesn’t cause skin-burns.

Pure silicon is a hard, dark gray solid with a metallic lustre and with a octahedral crystalline structure the same as that of the diamond form of carbon, to which silicon shows many chemical and physical similarities.

As for Silicon and Sulphur, if I’m not mistaken, silicon was discovered, so as to speak, after sulphur, and thus got the symbol S and the silicon, when discovered was given the symbol Si.

Uses of Silicon

• The element is a major constituent in ceramics and bricks.
• Being a semiconductor, the element is put into use for making transistors.
• Silicon is widely used in computer chips and solar cells.
• It is a vital component of Portland cement.
• Silicon is used in the production of fire bricks.

Silicon is one of the most useful elements to mankind. Most is used to make alloys including aluminium-silicon and ferro-silicon (iron-silicon). These are used to make dynamo and transformer plates, engine blocks, cylinder heads and machine tools and to deoxidise steel. Silicon is also used to make silicones.

Nowadays, silicon is widely used in various fields of modern technology. Pure monocrystalline silicon is used in the production of silicon wafers for the semiconductor industry, in electronics and in high-efficiency photovoltaic applications, transistors, solar cells and other semiconductor devices [1] .

Silicon is not only used in the construction industry, but high tech equipment like computer chips, solar panels, and transistors are all made up of silicon. The fact that silicon can act as a semiconductor, by allowing control of electrical current, makes it ideal for virtually all electronic equipment.

Silicon is one of man’s most useful elements. In the form of sand and clay it is used to make concrete and brick; it is a useful refractory material for high-temperature work, and in the form of silicates it is used in making enamels, pottery, etc.

Silicon crystalline irritates the skin and eyes on contact. Inhalation will cause irritation to the lungs and mucus membrane. Irritation to the eyes will cause watering and redness. Reddening, scaling, and itching are characteristics of skin inflammation.

Silicon supplements are used as medicine. Silicon is used for weak bones (osteoporosis), heart disease and stroke (cardiovascular disease), Alzheimer’s disease, hair loss, and improving hair and nail quality.