students in chemistry lab have been given the...
students in chemistry lab have been given the assignment to identify an unknown compound using the flame - test procedures. the compound they are testing is a white crystal that emits a greenish light when placed into the flame. the unknown compound most likely contains\na barium.\nb lead.\nc sodium.\nd strontium.
Answer
# Brief Explanations:
In flame - tests, different elements emit characteristic colors. Barium emits a greenish color in a flame test. Sodium emits orange, strontium emits deep red as shown in the table, and lead is not indicated in the table but does not emit greenish light.
# Answer:
A. barium