What does the period number tell about the energy levels are occupied by the electrons in an atom?

a-the period number tell us how many electrons are in the highest energy level of the atom
b-the period number tell us how many electrons are in each sub level of the atom
c-the period number tells how many energy sub levels are occupied in the atom
d-the period number tells which is the highest energy level occupied by the electrons

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5