Periodic Classification of Elements

1.Which of the following is a fundamental property of an element
 
A. atomic mass
 
B. molar mass
 
C. atomic number
 
D. atomic density
 
Option”C” is correct
2.97.2% of the earth’s crust is made up of which elements?
 
A. 5
 
B. 8
 
C. 11
 
D. 19
 
Option”B” is correct
3.The most abundant metal on earth is
 
A. Iron
 
B. aluminium
 
C. calcium
 
D. sodium
 
Option”B” is correct
4.The most abundant element on earth is
 
A. oxygen
 
B. silicone
 
C. aluminum
 
D. Iron
 
Option”A” is correct
5.transition element is characterized by
 
A. unfilled d-orbital
 
B. unfilled f-orbital
 
C. unfilled p-orbital
 
D. unfilled s-orbital
 
Option”A” is correct
6.The last member of each period is
 
A. a metal
 
B. a halogen
 
C. an inert gas
 
D. a metalloid
 
Option”C” is correct
7.The first member of each period is
 
A. an alkali metal
 
B. a halogen
 
C. an inert gas
 
D. a metalloid
 
Option”A” is correct
8.Which of the following has zero electron affinity
 
A. oxygen
 
B. florin
 
C. nitrogen
 
D. Neon
 
Option”D” is correct
9.What is the general property of third and fourth group oxides?
 
A. basic
 
B. acidic
 
C. basic and acidic
 
D. Moody
 
Option”C” is correct
10.What is the number of elements in the second period of the periodic table?
 
A. 18
 
B. 8
 
C. 2
 
D. 10
 
Option”B” is correct