TS EAMCET 11-Sep-2020 Shift 1 Solved Paper

Section: Chemistry
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Question : 121 of 160
 
Marks: +1, -0
In the two elements Z1AM1 and Z2AM2, the following relations are true.
M1≠M2 and Z1≠Z2 but M1−Z1=M2−Z2, These elements are
(M is atomic weight, Z is atomic number)
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