Question

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1. Trick to learn reactivity series of metals.

2. Difference between Metals and Non-Metals with exceptions.


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${ \rm{ \purple{ Best \: of \: l uck}}}$
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Answer 1

Answer:

Metals are good conductors of heat & electricity. ... Non-metals are poor conductors of heat and electricity. Exception: Graphite conducts electricity. Metals except Na & K have high melting & boiling points while non-metals except diamond have low melting and boiling points.

Answer 2

1.

Trick to learn reactivity series of metals .

➜ I would personally recommend the following acronym poem which will help you easily to learn the metal reactivity series and that too in correct order.

(This poem is subjected from marketing rights and obligations of the content creator )

Please → Potassium

Stop → Sodium

Calling → Calcium

Me → Magnesium

A → Aluminium

Careless → Carbon

Zebra → Zinc

Instead → Iron

Try → Tin

Learning → Lead

How → Hydrogen

Copper → Copper

Saves → Silver

Gold → Gold

The metals at the highest and topmost range are the most reactive while the lowest ones are least .

2.

Difference between metals and non metals

Metals :

• Lustrous : Have a shiny appearance

• Sonorus : Produce sound when struck

• Malleable : Can be beaten into thin sheets

• Ductile : Can be drawn into wires .

• Basic in nature .

• Good conductors of heat and electricity .

• Hard and solid at room temperature .

• Tend to corrode when react .

• Exceptions :

1. ZINC - it's not malleable
2. MERCURY - it's neither ductile nor solid at room temperature .

Non - metals :

• Not lustrous

• Non sonorus

• Non malleable

• Not ductile

• Acidic in nature

• Bad conductors of heat and electricity

• Soft and brittle

• Form Compounds and bonds .

• Exceptions :

1. GRAPHITE : It is shiny as well as good conductor .
2. CARBON : Carbon is the main constituent of a diamond and diamond is considered to be the hardest substance on earth .