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CBSE Class 10 Science 2022 Delhi Term II Set 3

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Question : 1 of 5
Marks: +1, -0
(i) Write the electronic configuration of element XX, given by its symbol as under: 2040X{}^{40}_{20}X
(ii) Determine its position in the modern periodic table.
(iii) What is the nature of its oxide?
(iv) Name one other elements of its group..
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