Two representations of the distribution of electrons in the potassium atom are shown.

model 1 model 2
1s22s22p63s23p64s1

which model is useful in showing the reactivity of potassium?
neither model is able to show the reactivity of potassium.
model 1 because it shows an electron in the 4s orbital.
model 2 because it shows an electron in the outermost ring.
both models because each shows an electron in the outermost shell.

What postulate of the kinetic molecular theory best explains why gases have high fluidity? because collisions between gas particles are elastic, there is no loss of energy as particles flow past each other. because gases consist of large numbers of tiny particles, they spread out and do not come in contact with each other. because the attractive forces between gas particles are negligible, gas particles can glide easily past one another. because the average kinetic energy of gas particles increases as temperature increases, gas particles behave more like a liquid. question 6 compare the compressibility of gases and liquids. support your answer by describing the arrangement of particles in gases and liquids.

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

One does not belong why? ice, gold ,wood ,diamond and table salt