Eclipse of the sun occurs(A).When the moon is between the sun and the earth.(B). When the earth is between the moon and the sun.(C).When the sun and the earth are
parallel to each other.(D).When the moon is directly above the earth.(E).All the above
are correct

Diamond will scratch quartz. true or false

If frequency goes up, what happens to wavelength? does it get shorter or longer?

Elements in group viiia (also known as group 18, or the noble gases) have similar properties because they all have a. the same number of electron shells b. full octets c. the same number of valence electrons d. the same number of electrons needed to fill their octet