Major differences between metals and non-metals:
Metals:
• Generally shiny (lustrous)
• Good conductors of heat and electricity
• Malleable and ductile
• Usually solids at room temperature
• Lose electrons to form positive ions
• Form basic or amphoteric oxides
Non-metals:
• Generally dull in appearance
• Poor conductors of heat and electricity
• Brittle (if solid)
• Can exist as solids, liquids, or gases
• Gain electrons to form negative ions
• Form acidic or neutral oxides
Final Answer:
Metals tend to lose electrons and conduct electricity well, whereas non-metals gain electrons and are poor conductors of heat and electricity.
Given below are two statements:
Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number.
Statement (II): Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers.
In the light of the above statements, Choose the correct answer from the options given below:
The correct orders among the following are:
[A.] Atomic radius : \(B<Al<Ga<In<Tl\)
[B.] Electronegativity : \(Al<Ga<In<Tl<B\)
[C.] Density : \(Tl<In<Ga<Al<B\)
[D.] 1st Ionisation Energy :
In\(<Al<Ga<Tl<B\)
Choose the correct answer from the options given below :