Predict the bond angle in metgane using vsepr theory
the answer is the first one and the third one
the name for a binary molecular compound has the form
multiplying prefix+name of first element multiplying prefix+stem of second element element+ide (two words)
the multiplying prefixes for three and nine are tri and nona, respectively.
the stem of iodine is iod.
put them together, and the name of s₃i₉ is