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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements2 Marks
Question
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting.
  1. How many electrons would be there in the outermost shell of the element X?
  2. To which group of the periodic table does the element X belong?
  3. Write the formula of the compound formed when X reacts with chlorine.
✓

Answer

  1. 2.
  2. Group 2.
  3. XCl 2.

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