Arrange the first 20 elements according to SPDF orbitals

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

the correct answer is:

a. formation of precipitation

> 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.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.