Hii! i’m timed so can someone please answer quickly! What is the frequency of this wave? 1,2,3, or 4

I cant find any answers to this question! i really appreciate it!

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

What is the number of atoms in 3.54 mol s

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?