Which of the following pairs is/are correctly matched?
Select the correct answer using the code given below:
Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons (protons + neutrons). Two nuclides are isotones if they have the same number of neutrons, but different number of protons
Which one among the following is correct regarding 20Ne, 23Na+, 19F- and 24Mg2+?
During explosion of gunpowder, which of the following gases are evolved in the proportion of 1 : 3?
The metal constituent of chlorophyll is
The reaction that takes place in soap making is called saponification. Basically soap is sodium or potassium salts of
When a copper rod is dipped in aqueous silver nitrate solution, the colour of the solution changes to blue. This is because