Short answerEasy1 mark
2(a)
The following table represent the elements and the atomic number. With reference to this, answer the following using only the alphabets given in the table.
Which element combines with hydrogen to form a basic gas?
Topic: Periodic properties and trends
Previous-year question practice database
Answer
Exam answer
Q.
Explanation
Atomic number 7 is nitrogen; NH₃ is basic.
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