What is one similarity among elements in a group? Group of answer choices

atomic weight

practical uses

atomic mass

chemical properties

Classify each statement about effective nuclear charge, zeff, as true or false.

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

One nanometer is equal to how many meters?