Urgent! best answer gets brainliest! when aqueous solutions of sodium nitrite and hydroiodic acid are mixed, an aqueous solution of sodium iodide and nitrous acid results. write the net ionic equation for the reaction.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.