Red or irritated eyes and skin, choking, vomiting, convulsions or seizures, pinpoint pupils may be symptoms of what type of cbrne exposure?

Answer is: this is chemical type of CBRNE exposure.
CBRNE is an acronym for Chemical, Biological, Radiological, Nuclear and high yield Explosives (usually used for weapons of mass destruction).
Chemical weapons can be: nerve agents, blister agents, choking agents and blood agents.

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.