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vivek gupta Grade: 11
        In the Modern Periodic Table, calcium (Atomic number = 20) is surrounded by elements with atomic numbers

12, 19, 21 and 38. Which of the following have physical and chemical properties similar to Calcium.
6 years ago

Answers : (4)

Vikas TU
4338 Points
										

12,19,21

6 years ago
Sudheesh Singanamalla
114 Points
										

Element with atomic number 38 i.e Sr will show the same physical and chemical properties as that of calcium whose atomic number is 20


This is because , they belong to the same group of the periodic table (group II) , All the elements of a group have similar properties .


in group 2 only Be doesnot show similar properties to other elements because of its diagonal relationship with Al .


the rest of them show the same physical and chemical properties.


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PLEASE APPROVE


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6 years ago
Surbhi Kumari
29 Points
										

it should be 12 and 38 since they belong to the same group of alkaline earth metals

6 years ago
sumukh purohit
18 Points
										

12 & 38

6 years ago
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