Worksheetsprep 2 , .lesson 1
Total questions: 15
Worksheet time: 12mins
In Mendeleev's periodic table, elements are classified in an ascending order according to their.......................
Atomic weight
Atomic number
In Mosely's periodic table, elements are classified in an ascending order according to their..............................
Atomic weight
Atomic number
The scientist ............. ...... discovered the main energy levels of the atom
Mendeleev
Rutherford
Bohr
Mosely
......................is located on the left side of the periodic table.
S-Block
P_Block
d_Block
F_Block
d-block is located on the ............... of the periodic table
Right
left
Middle
Below
The transition
elements start to appear from the beginning of the............... Period
First
second
Third
fourth
The elements which occupy the middle block (d) in the periodic table are called
......................elements
AAcidic
Alkali
Transition
Noble
Lanthanides and actinides are located in the........................block
S
P
D
F
The element whose atomic number (18) is...........................
transition element
inert gas.
Metallic element
Halogen element
The element (12X) is located in ....................... of the periodic table.
period (2) and group (2A)
period (2) and group (3A)
period (3) and group (2A)
period (3) and group (4A)
S block contains 6 groups
true
false
Who added lanthanides and actinides
Mosely
Mendleev
Bohr
Rutherford
Moseley added zero group
True
False
