Ca + 2HNO₃ =Ca(NO3)2 + H₂ How many atoms of calcium are participating
in the above reaction to produce 0.5 mores
of calciunt nitrate ?​

sorry idk the answer well to you i have a explaination

explanation: a formula which shows the arrangement of atoms in the molecule of a compound

i believe that it is a exoplanet

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.