Question

Which of the following is not a property of aluminum?
A.Good conductor of heat and electricity
B.Its malleable
C.It is heavy
D.It is ductile

Answer 1

Hint: Aluminum is a metal with atomic number 13 in the periodic table of elements and it is a soft metal generally and therefore, it will follow all the properties of metal which are general in nature. By matching the properties of metal, the answer could be obtained easily.

Complete step by step answer:
Generally, elements are divided into metals and non- metals on the basis of specific properties.
Now first we will look at a few properties of metals and non- metals and then on the basis of this we can conclude the answer.
-Properties of metals: -
They are Good conductor of heat and electricity
They are lustrous in nature (shiny).
They are malleable (can be molded into other shapes)
They are ductile (can be drawn into thin wires)
They are solids at room temperature. (except few)
-Properties of Non- metals: -
They are bad conductors of heat and electricity.
They are not lustrous in nature (not shiny)
They are not malleable
They are not ductile
They can be solid, liquid of gas at room temperature
So, on the basis of these properties all the elements were divided into metal and non- metal. Some examples of metals are Iron, copper, Zinc, aluminum etc. and some examples of non- metals are Carbon, Oxygen, Chlorine etc.
 aluminum is a soft metal which is silvery white in color and is considered as metal so it will be a good conductor of electricity, it will be malleable, it will be ductile and it has low density.

Therefore, correct option is c. i.e. It is heavy which is not a property of Aluminum.

Note:
Generally heavy metals are those which have higher atomic number and masses and to identify metals and non- metals we have to just look at its position in periodic table and the classification. There are semi-metals also which are in between the s and p block of periodic table i.e. d-block elements and there are few semi-metals in p block also.