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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.

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.

Grade:11

4 Answers

Vikas TU
14149 Points
10 years ago

12,19,21

Sudheesh Singanamalla
114 Points
10 years ago

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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Surbhi Kumari
29 Points
10 years ago

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

sumukh purohit
18 Points
10 years ago

12 & 38

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