(ii) What particle is represented by ●? (iii) What is the central part of the atom called that contains both and ●?
(b) Use the model to explain why the six electrons are arranged as shown.

During which movies do spring tides new moon first quarter waxing gibbous waxing

All motion is caused by force? true or false

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability