What is 4530 in scientific notation

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.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen