As different elements were being discovered, scientists gathered more and more information about the properties of these elements. They found it difficult to organise all that was known about the elements. They started looking for some pattern in their properties, on the basis of which they could study such a large number of elements with ease.
1. Give reason for the classification of elements.
a. To study the properties of elements
b. To study their reactions properly by grouping together with air
c. To study the number of electrons
d. All the options
2. Find the position of alkali metals.
a. Left most column
b. Right most column
c. Top most row
d. Bottom most row
3. Locate the position of noble gases.
a. Left
b. Top
c. Bottom
d. Right
4. Locate the position of metals.
a. Left
b. Top
c. Bottom
d. Right
5. Locate the position of Non metals.
a. Left
b. Top
c. Bottom
d. Upper Right
