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The position of the element A, B and C i...

The position of the element A, B and C in the periodic table are given below.
A- 3rd period and 16th group
B- 4th period and 5th group.
C- 4th period and 5th group
a) Write the electronic configuration of the element A.
b) Which among them are transistion elements? Write any two characterization of transistion elements.

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a) 2,8,6
b) B, They form coloured compounds. They show similiarities in chemical properties in period as well as group.
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