18. For each of the excited state electron configurations given below, identify the corresponding element and then provide two more possible excited state configurations. a) 1s 22s 12p 2 b) 1s 22s 22p 2 3s 23p 1c) 1s 22p 2

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

indium, and thallium have three electrons i think

that tool would be a compass

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.