The valence electrons of an atom of which element will feel the same effective nuclear charge as the valence electrons of a beryllium (be) atom?

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

What is the maximum number of electrons that an atomic orbital can contain?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.