Science, asked by sashi7259928023, 10 months ago

What
non metals?
what are metalloids
Give examples of metalloids?
Explain how the element are
come represented
element
are found so fare explain
What is periodic classification of element?
the elements are
arranged in
Не гара​

Answers

Answered by guptapragati492
16

Answer:

Here is your Answer mate↓

Non-metals are the elements which form negative ions by accepting or gaining electrons. Non-metals usually have 4, 5, 6 or 7 electrons in their outermost shell.

Non-metals are those which lack all the metallic attributes. They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Some they are even solid at room temperatures like Carbon, sulfur and phosphorus.

Non-Metals

Non-Metals

Physical Properties of Non-Metals

Ductility is the property of the material to be stretched into wires but non-metals are not ductile except for carbon, as carbon fibres find uses in a wide variety of industries including sports and music equipment.

Another property characteristic to metals is absent in non-metals called malleability. They can’t be drawn into sheets are they are brisk and break on applying pressure.

They are not lustrous as they do not have any shiny appearance.

They are not sonorous and do not produce a deep ringing sound when they are hit with another material. They are also bad conductors of heat and electricity except for graphite.

List of Non-Metals (the Complete List)

Nonmetal State at Room Temperature Symbol

Hydrogen Gas H

Nitrogen Gas N

Oxygen Gas O

Fluorine Gas F

Chlorine Gas Cl

Bromine Liquid Br

Iodine Solid I

Carbon Solid C

Sulfur Solid S

Phosphorous Solid P

Silicon Solid Si

Chemical Properties of Non-Metals

1. Reaction with Water

Non-metal does not react with water but it is usually very reactive in air, which is why some of them are stored in water. For example, one of the highly reactive non-metals is phosphorus and it catches fire when exposed to air that is why it is stored in water to prevent its contact with atmospheric oxygen.

2. Reaction with Acids

None of the non-metals is known to react with acids.

3. Reaction with Bases

The reaction between non-metals and bases is a very complex one. The reaction of chlorine with bases like sodium hydroxide gives products like sodium hypochlorite, sodium chloride as well as water.

4. Reaction with Oxygen

Oxides of non-metals are formed when it reacts with oxygen. The oxides of non-metals are acidic or neutral in nature.

When sulfur reacts with oxygen, we get sulfur dioxide.

S + O2 → SO2

When sulfur dioxide reacts with water it forms sulphurous acid.

SO2 + H2O → H2SO3

Uses of Non-Metals

For the preparation of ammonia, nitric acid and fertilizers, nitrogen is used.

For the purification of water, chlorine is used,

Hydrogen is very useful as rocket fuel.

Carbon can be used to make pencils when it is in the graphite form.

Sulphuric acid is prepared using sulphur.

Answered by sonisingh26119
12

 \huge \underline \mathrm{Question:-}

1) What are non metals?

2) what are metalloids?

3) Give examples of metalloids?

4)Explain how the element are come represented

element.

5)What is periodic classification of element?

_____________________________

 \huge \underline \mathrm{Answer:-}

1) Non-metals are the elements which form negative ions by accepting or gaining electrons. Non-metals usually have 4, 5, 6 or 7 electrons in their outermost shell.....

2) Metalloids are a very small group of elements found in the periodic table of elements along the zig-zag line that distinguishes metals from non-metals and is drawn from between boron and aluminum to the border between polonium and astatine....

3) The Boron, silicon, germanium, arsenic etc..

4) The

the capitalized first letter of the name of the element in English, Latin, or German. For example…

C for carbon

K for kalium (potassium in Latin)

W for wolfram (tungsten in German)

the capitalized first letter followed by another lowercase letter from the name of the element in English or Latin. For example…

Si for silicon

Sn for stannum (tin in Latin).....

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