Helium (he), oxygen (o), carbon (c) fluorine (f), and chlorine (cl) are all nonmetals. using the periodic table, which pair of nonmetals do you predict has the most similar properties, and why? oxygen and chlorine, because they are both alkalis helium and carbon, because they are both noble gases oxygen and fluorine, because they are in the same period fluorine and chlorine, because they are both halogens

Answer is:  Fluorine and chlorine, because they are both halogens.

Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.

In the gaseous state halogens form diatomic covalent molecules.

Halogen diatomic molecules (halogen means "salt producing") in the gaseous state in room temperature are fluorine (F₂) and chlorine (Cl₂).

Both molecules have single covalent bond and they are very reactive.

Halogens need to gain one electron to have electron cofiguration like next to it noble gas. For example, fluorine has 9 electrons and it gain easily one electron in chemical reaction to have electron configuration like noble gas neon (Ne) with 10 electrons.

Fluorine and chlorine, because they are both halogens

Explanation:

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation:

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023