Multiple Choice
Which of the following is correct for the element with atomic number 20?
Symbol Atomic mass (u) Period Group
A) Ca 40.08 2A/2 4
B) Ca 40.08 4 2A/2
C) Ca 20 2A/2 4
D) Ca 20 4 2A/2
E) Ne 20 2 8A/18
Correct Answer:
Verified
Correct Answer:
Verified
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