Which element has the electron configuration [xe] 652 4f1450° 6pt?
a
gold fatomic number 79)
ob. mercury (atomic number 80)
lead (atomic number 82)
d. potassium (atomic number 19)
o e.
copper (atomic number 29)

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope