These types of compounds are polar, which allows them to mix well with water, but they are also very flammable.
what is the compound??

i'm pretty sure its b i might be wrong though!

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.