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.

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