TS EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
In long form of periodic table an element ' \(E\) ' has atomic number 78. The period and group number of the element are \(x\) and \(y\) respectively. \((x+y)\) is equal to
- A \(18\)
- B \(15\)
- C \(17\)
- D \(16\)
Answer & Solution
Correct Answer
(D) \(16\)
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