chemical element-Protactinium; atomic number-91; a radioactive metallic element
Protactinium is a chemical element with the symbol Pa and atomic number 91.
1 syllables
pa
VocabClass lessons are designed to engage students, improve motivation in learning the subject matter, and generate better results. Long-term retention is our focus and by making the learning process fun, our gamified approach has a positive impact on this goal.
View all games!