Short answerEasy1 mark
3(i)
The atomic number of two atoms ‘X’ and ‘Y’ are 14 and 8 respectively. State:
the formula of the compound formed between ‘X’ and ‘Y’. (Do not identify X and Y)
Topic: Valency and formula formation
Previous-year question practice database
Answer
Exam answer
XY₂.
Explanation
Valencies are X = 4 and Y = 2; simplest ratio gives XY₂.
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