Metalloids

More individual elements are metals than are either of the other categories given.

Boron forms electron poor hydrides that can exist in many different shapes and formulas because of the hydrogen bridges it can form.

Metals and non-metals:

Metals have many properties like they are lusterous and are hard. They are also very good conductors of heat and electricity. They are most of the time magnetic also. But this is not for every metal for-example Lithium is soft.

Examples of metals:

Cobalt, iron, copper, plutonium....

Non-metals also have many properties as well. Their properties are pretty much the opposite of metals. They are poor conductors.

Examples of non-metals:

Oxygen, hydrogen, neon.......

Any other questions just type them out and I'll be here.

What are properties of the Metalloids?

Are non-meatals with metallic properties, or metals with out metallic properties.

If you go on this website: http://www.chem.uwec.edu/Chem150_S07/elaborations/unit1/unit-1b-octet-rule/fig2-6.png you will see the periodic table of elements, the black line shows metals and non-metals (right non-metals also green) the purple are metalloids.

Forward biase the given diode by using a Variable resistor in the circuit. By adjusting the value of variable resistor you will adjust the voltage being applied to junction diode. First adjust the resistance such that no(negligble) current flows through the circuit. Now start decreasing the value of resistance. Note the voltage across resistor(Vr) when current just starts flowing through the circuit. Then Potential barrier of diode will be: Vb=V-Vr Vb:Barrier Potential V:Battery Voltage Vr:Voltage Drop across resistance when current just starts flowing through the circuit.

Hydrogen.

There are 17 nonmetals and only 6 metalloids.

Metalloids share properties of both metals and nonmetals. They can conduct electricity to some extent, like metals, but not as efficiently. They are also semi-malleable and semi-ductile, similar to metals, but also have characteristics of nonmetals such as being brittle and not as lustrous.

The metalloids silicon and germanium, also in Group 14,are used to make computer chips.

Remember a family is also a group, so 3A - 7A.

The metalloid with the largest atomic weight and the highest density is Polonium. Polonium is radioactive with no stable isotopes. The most stable isotope has a molecular weight of 202 but only a half life of about 45 minutes. It has a density of approximately 9.19 g mol-1

You can make almost anything shiny by polishing it.

i don't think that it is but i amno scientist so i can't be sure but ihope that this helps you all.

Calcium is a metal.

Transistors require semiconductor material to be able to function since a transistor must be able to change it's state of conductivity according to its working conditions. Although many elements these days are involved in manufacturing of transistors. Fundamentally two common semiconductors are described for educational purpose for BJT (bipolar junction transistors). They are Silicon (Si) and Germanium (Ge). Silicon is never intrinsic (pure) in transistors.

To form a p-n-p or n-p-n junction they are doped with pentavalent (5 valance electrons) and trivalent (3-valance electrons) impurities into their crystal lattice. Common impurities in silicon transistors may be trivalent Boron for p-type and pentavalent phosphorus for n-type. Germanium conducts better when in conductive state than silicon due to 32 electrons per atom, but due to high electron density the device can handle very little electrical current.

Germanium was used in the past for pre-amplifiers. Silicon does not have as good conductivity and also does not provide very high hfe values. The highest hfe value you will find in signal transistors would be approximately 300, whereas power transistors you would commonly have an hfe of about 25. Silicon only has 14 electrons per atom. The main advantage is with silicon is that it has a lower electron density when it is in conductive state; to allow larger currents and higher power dissipation.

In the past, difficulty was experienced with the practical use of silicon due to its lack of 'purity'. Once a purer form of silicon was produced, there was no stop to it. Silicon is more cost effective. In 1998 silicon sold for $10 p/kg compared to germanium which was almost at $1800 p/kg.

Germanium is showing some comeback again. Gallium arsenide (GaAs) in wireless communications devices are being replaced with Silicon-germanide (SiGe) and become more useful with modern high speed integrated circuits. Germanium is also commonly used in infrared night vision systems and fiber-optics.

Ultimately one cannot say that Silicon is the only element used in transistors, but what one can say is that it is probably the most commonly used and most fundamental for modern applications.

Yes, metalloids are ductile they are also malleable, but is not shiny.

Metalloids generally have properties that are intermediate between metals and nonmetals, including varying degrees of ductility. Some metalloids like silicon and germanium can exhibit ductile properties under specific conditions, while others like arsenic or antimony are more brittle. So, it depends on the specific metalloid in question.

Bromine is indeed a diatomic element, but bromideis the ion, so it can be made of just one charged atom.

Metalloids are all malleable, but some are more malleable than others. Some have a brittle crystalline structure that prevent them from being malleable enough for many practical applications.

Metals are malleable (can be hammered into thin sheets), ductile (can be drawn through wires), lustrous (shining), sonorous (give a ringing sound when hit), excellent conductors of heat and electricity, have high melting and boiling points and are usually solid at room temperature.

Nonmetals are non-malleable, non ductile, dull colored, give a dull sound when hit, insulators or bad conductors of heat and electricity, have low melting and boiling points and are found in all three states of matter, that are, solid, liquid and gas.

Substances having both metallic and nonmetallic features are called metalloids.

The molecular mass of borax (sodium tetraborate decahydrate - Na2B4O7.10H2O) is 381,37 g.

Glass.

Sand.

Metalloids are: B, Si, Ge, As, Sb, Te, Po.

The six elements commonly recognized as metalloids are boron, silicon, germanium, arsenic, antimony and tellurium and are found in group 14-16

Neon I classified as a Nobel and Inert gas.