This question reviews the format for writing an element's written symbol. Recall that written symbols have a particular format. Written symbols use a torm like this: 1735Cl mass number atomic namber It is also correct to write symbols by leaving of the atomic number, as in the following form: 35ClormassnumberSymbol the element can only be chlorine. Sometimes you will only see 35Cl, where the atomic number is not written. Watch this video to review the format for written symbols. this question to look up atomic numbers. Use the hints in the following part whenever needed to review the steps to filling in this type of table. Part A Once you have filled in all the gaps on a separate shoet of paper, enter the four missing element symbols in the first row of the table into the answer box below. You can opont the first hinf to viow a vidoo that sfeps you through filing in the first cafumn of the fabie. Enter the four missing symbols for the first row of the table from leit to right, separated by commas, into the answer box below. Use the stacked superisubscripts button (available in the templates button menu above the answer entry box) to enter the symbols in the following form: mass numbes Symbol, or for example, 1735Cl