What is the chemical symbol for Protactinium?
Pr
Pt
Pa
Pm
Correct answer is C
No explanation has been provided for this answer.
What is the chemical symbol for Thorium?
Th
To
Tr
Tm
Correct answer is A
No explanation has been provided for this answer.
What is the chemical symbol for Actinium?
A
Ac
At
Am
Correct answer is B
No explanation has been provided for this answer.
What is the chemical symbol for Radium?
R
Rd
Rm
Ra
Correct answer is D
No explanation has been provided for this answer.
What is the chemical symbol for Francium?
Fr
Fc
Fm
Gt
Correct answer is A
No explanation has been provided for this answer.