What is the name of this element, whose element symbol is shown below?  Enter the name in all lowercase. Hg

What is the name of this element, whose element symbol is shown below?  Enter the name in all lowercase. F

Which of the following compounds is most likely to have parentheses as part of its chemical formula?

What is the symbol of the element below?  Enter the name using correct case (lowercase/uppercase). iodine

What is the symbol of the element below?  Enter the name using correct case (lowercase/uppercase). barium

What is the name of this element, whose element symbol is shown below?  Enter the name in all lowercase. Pb

A solid object has a true mass of 71.5631 pounds.  A student measured the mass of the object in a lab, and their measured value is too low, with a percent error of 5.61%.  What was the measured mass of the object? Must show work for full credit.  Put your final calculated answer in a readable background color.

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What is the symbol of the element below?  Enter the name using correct case (lowercase/uppercase). copper

Write the element symbol that matches each description.  Symbols must be written perfectly.  (1 pt each)   A)  Period 4 alkaline earth metal:  B)  Period 6 noble gas:  C)  Period 3 element with 5 valence electrons:  D)  Period 2 element that tends to easily form a 2+ charge:  E)  Element with 74 protons: