An element X is placed in the 3rd group and 3rd period of the modern periodic table.

a) write the electronic configuration of X
b) Write thr formula of thr compounds formed when the element X reacts with another element Y of atomic number 17
c) will the oxide of this element acidic or basic

Rajat is correct that there is no element in 3rd group and 3rd period.
Group 13 was previously called as group 3A and the question is solved on basis that it is group 3A or 13.

1. Electronic configuration, 2.8.3
2.  XCl3
3.  X2O3 . The element is Al and it forms amphoteric oxides.
 

  • 12
there is no element in 3rd group and 3rd period.
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