Question

question 12 1 pts the symbol for a mercury atom or for a bottle containing mercury is hg mc hg mrc question 13 1 pts the symbols for elements may have one or two letters and the second letter is always small case. true false

Explanation:

For Question 12, the chemical symbol for mercury is Hg following the standard chemical - element symbol notation. For Question 13, according to the rules of chemical element symbols, they can have one or two letters and if two, the second is lowercase.

Answer:

Question 12: C. Hg
Question 13: True