The Correct Name of the Compound Na₃N Is

Q38: Which pair of substances could be used

Q39: An atom of ¹⁷O contains protons.<br>A) 17<br>B)

Q40: What is the formula of the compound

Q41: Cathode rays are deflected away from a

Q42: Of the following, only is not a

Q44: Different isotopes of a particular element contain

Q45: Elements exhibit similar physical and chemical properties.<br>A)

Q46: How many protons does the Br^-ion

Q47: What group in the periodic table would

Q48: The charge on the ion is -