Answer:
chlorine and I think maybe sulphur. but check the internet
The question can be changed into a new form:
Which element has the most negative electron affinity, or attraction for electrons? halogens have the highest electron affinities, and thus are more attracted to the electrons in the Hydrogen atom than any element in their respective periods.
In this case all the following choices are in the same period, thus Cl or Chlorine is the answer as it is a halogen.
The answer to the question is radium (Ra)
Main group elements
transition metals
lanthanides
actindes.
The photoelectric effect occurs when light shines on a metal. ... Light of any frequency will cause electrons to be emitted.
