What is the chemical symbol for Promethium?
...What is the chemical symbol for Promethium?
Pr
Pro
Pm
P
Correct answer is C
No explanation has been provided for this answer.
Which of the following in aqueous solution is neutral to litmus? ...
An element Z, contained 90% of 168Z and 10% of Z1818 its relative atomic mass is?...
What is the chemical symbol for Lutetium? ...
The most suitable indicator for the reaction between NaOH and HCOOH is? ...
The fourteen elements (atomic number 90-103) after actinium are called? ...
A hydrocarbon containing 88.9% carbon has the empirical formula [H = 1 C = 12] ...