Define the following Define the following B) Define, i) Cation. ii) Valency. iii) Atomic mass number. iv) Law of conservation of matter. v) Avogadro's number. Share with your friends Share 0 chetanyadav61551... answered this Tatttttu 0 View Full Answer Anshu answered this 1) positively charged ion 2)combining capacity of elements 0 Anshu answered this 3)mass number is sum of protons and neutrons 0 Janvi Pratap answered this Here is your answer...u can get to know more thing from this...bope it is helpful to u... 0 Ashish Singh answered this 1. Positively charged particles are called cations. 1 Ashish Singh answered this 2. The combining capacity of elements is known as its valency. 1 Maviya Suba answered this 4.total mass before reactant = total mass after solution . 0 Sakshi Bhilare answered this Please find this answer 0