Which of the following sets of elements would have the most similar chemical properties? lithium (Li) and beryllium (Be)
lithium (Li) and beryllium (Be)

sodium (Na) and beryllium (Be)
sodium (Na) and beryllium (Be)

lithium (Li) and sodium (Na)
lithium (Li) and sodium (Na)

sodium (Na) and magnesium (Mg)

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion