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Let me tell you some points:
(1) Graphite, being a non metal, is a good conductor of electricity due to flow of electrons within it. (Proof: A pencil conducts electricity, because its nib (lid) is made up of graphite).
(3) Tap water contains dissolved minerals. So, when current is passed through it, there is a free flow of ions which migrate towards electrodes for discharging. Hence, tap water conducts electricity. (Proof: When a bulb is connected to the circuit, it glows).
(4) Bronze: Bronze is an alloy of Copper and Tin, which are good conductors of electricity. So, bronze can also conduct electricity.
(2) But, distilled water neither contains free electrons, nor free mobile ions, to conduct electricity. Hence, distilled water does not conduct electricity. (Proof: Take distilled water and pass current through it. Connect a bulb to the circuit, it does not glow).
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iii. plastic is a bad conductor
Plastic is not a good conductor, it means it is insulator...
no.of atoms = no.of mole× avogadro's no.
so,here n( no.of mole) = 1/22.4
and avogadro's no.= 6.023× 10²³
so answer is,
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metals : - those elements have tendency to loose electrons and form cations is called metals.
ex: - sodium, potassium, etc.
scientific reasons : - the last shell of any metals contain one, two, or three electrons can easily loose to become stable.
group number = number of electrons in their valence shell.
metal in group 1 have only one electrons in their outermost shell so, are more reactive in nature than metals of other groups.
non - metals : - those elements have tendency to gain electrons and form anion is called non - metals.
ex : - chlorine, fluorine, oxygen, nitrogen.
their outermost shell contains 5,6,7 electrons.
for non metals : -
group number = 10 + valence electrons.
non - metals of group 17 are reactive metals are known as more electronegative elements because can snatch electrons from any metals and form anion to become stable.
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