Krypton is named after the greek word that means “secret.” which explains why krypton was most likely given this name?

a. krypton is a halogen, so it is a secret element because it is always part of a compound and is difficult to find by itself.
b. krypton is a halogen, so it should be kept secret because it is so reactive and toxic.
c. krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
d. krypton is a noble gas, so it secretly bonds with every type of element without showing it.

answer : )

Answer is: C. Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.

Krypton is a chemical element with symbol Kr and atomic number 36.

Krypton has 36 electron and 36. It is noble gas (group 18).

Electron configuration of krypton atom:  

₃₆Kr 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶.

Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.