: Write down an expression that you think models the average acceleration of the fan cart during the pulse as a function of the angle on the Angle Indicator. Justify using this model. Consider using limiting-case analysis in your justification.

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