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Question
in the modrn periodic table, the element calcium (atomic number=20) is surrounded by elements with atomic numbers 12, 19, 21 and 38.
which of these have physical and chemical properties similar to that of calcium.
in the modrn periodic table, the element calcium (atomic number=20) is surrounded by elements with atomic numbers 12, 19, 21 and 38.
which of these have physical and chemical properties similar to that of calcium.
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Solution
The electronic configuration of Ca is 2,8,8,2
The element with similar electronic configuration is
atomic no. 12 = 2,8,2
atomic no. 38 =2,8,8,18,2
All the 3 elements carry 2 electrons in their outermost shell.
Elements with same number of outermost electron belongs to same group and have similar physical and chemical properties.
The element with similar electronic configuration is
atomic no. 12 = 2,8,2
atomic no. 38 =2,8,8,18,2
All the 3 elements carry 2 electrons in their outermost shell.
Elements with same number of outermost electron belongs to same group and have similar physical and chemical properties.
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