The correct answer is 42. I know this answer is right because i have already turned my assignment in and got it right.
invisable
you probably dont want to put that...
It's B) electrons, is the right answer
a) Group 2 elements have 2 electrons on their outer shell, so they form a 2+ charge.
b) they lose 2 electrons as they are transferred to the non metal.
c)They obtain this charge as when they are made into an ionic compound the 2 electrons on the outer shell are transferred to the non metal, meaning there are 2 more protons that electrons, giving it a positive charge.
hope this helps! :)
Volume=Mass over density. V= 220/55. V=4cm^3
