The diagram shows a portion of the periodic table. Elements that were unknown during Mendeleevs time have been removed. Using Mendeleevs rules for arranging elements, which box would contain the metal gallium, which has an atomic number of 31 and an atomic mass of 70?

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

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.

Consider the story you just read. all but one of the choices below indicate that something is living.