17 fill in the blank 4 points what is the symbol of the last element in period 4? type your answer... previous
17 fill in the blank 4 points what is the symbol of the last element in period 4? type your answer... previous
Answer
Brief Explanations:
In the periodic table, period 4 ends with a noble - gas element. The last element of period 4 is krypton, which has the symbol Kr.
Answer:
Kr