Why then is a diamond extremely hard and sparkly and graphite is soft and gray and dull ?

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

What is the correct term for living the most sustainable life you can within your current circumstances?

What are the first three quantum numbers for the electrons located in subshell 2s?