Periodic classification of elements Quiz-1

Periodic classification of elements

Quiz

 

1. Newlands relation is called
   1.   Law of Octaves
   2.   Periodic Law
   3.   Atomic Mass Law
   4.   Musical Law
2. Upto which element, the Law of Octavees was found to be applicable.
   1.   Oxygen
   2.   Calcium
   3.   Cobalt
   4.   Potassium
3. In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
   1.   Oxygen
   2.   Chlorine
   3.   Silicon
   4.   Gemanium
4. At the time of Mendeleev, the number of elements known was
   1.   65
   2.   63
   3.   64
   4.   62
5. The arrangement of elements in the Modem Periodic Table is based on their
   1.   increasing atomic mass in the period
   2.   increasing atomic number in the horizontal rows
   3.   increasing atomic number in the vertical columns
   4.   increasing atomic mass in the group
6. Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?
   1.   Group 8
   2.   Group 18
   3.   Group 2
   4.   Group-10
7. Element ‘X’ forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:
   1.   Si
   2.   Mg
   3.   Al
   4.   Na
8. Which of these belong to the same period?
   Element A B C
   Atomic number 2 10 5
   1.   A, B
   2.   B, C
   3.   C, A
   4.   A, B and C
9. Pick out the chemically most reactive elements from the given triads.
   Li, Na, K F, Cl, Br
   1.   Li and F
   2.   Li and Br
   3.   K and F
   4.   K and Br
10. Which among the following elements has the largest atomic radii?
    1.   Na
    2.   Mg
    3.   K
    4.   Al
11. Which of the following elements does not lose electron easily?
    1.   Na
    2.   F
    3.   Mg
    4.   Al
12. Chlorine (17) belongs to which group and period
    1.   17,3
    2.   17,4
    3.   16, 4
    4.   16, 3
13. Which of the following elements will form an acidic oxide?
    1.   An element with atomic number 7
    2.   An element with atomic number 3
    3.   An element with atomic number 12
    4.   An element with atomic number 19
14. The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. to which of the following categories does the element belongs?
    1.   Metal
    2.   Metalloid
    3.   Non-metal
    4.   Non
15. An element 'X' belong to third period and second group of the modern Periodic table.
    (a) Write its electronic configuration.
    (b) is it a metal or non-metal?
    1.   (a) 2,8,2
       (b) Metal
    2.   (a) 2,8,1
       (b) Metal
    3.   (a) 2,8,2
       (b) Non-Metal
    4.   (a) 2,8,1
       (b) Non-Metal
16. The elements A, B and C belong to groups 1, 14 and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?
    1.   A and B
    2.   A and C
    3.   B and C
    4.   None
17. An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound.
    1.   XY2
    2.   XY
    3.   X2Y
    4.   (XY)2
18. An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
    1.   Valency = 6
    2.   Valency = 2
    3.   Valency = 1
    4.   Valency = 3