First can you answer these two questions based on the diagram the picture is below

$1.$ What would the chemical name be for the above compound if element A was

silicon and element, E was iodine

$2.$ Element R could not be nitrogen, oxygen, sulfur, or selenium you just have to pick one

$.$

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Now i just need you to answer the questions

Is the molecule polar nonpolar, ionic or is there not enough information to decide

S$2$Se

This one to

BrI

Last question

What is the correct chemical name for

Se$9$Br$7$