what elements were added to the second and third models which were not present in the first?
Answers
Answer:
The first main transition series begins with either scandium (symbol Sc, atomic number 21) or titanium (symbol Ti, atomic number 22) and ends with zinc (symbol Zn, atomic number 30). The second series includes the elements yttrium (symbol Y, atomic number 39) to cadmium (symbol Cd, atomic number 48).
FEEDBACK were added in the second and and third model of communication.
The linear model of communication is a one-way interaction where feedback from the customer or recipient is not present. Linear is the primary communication model for communications.
The transactional model of communication is based on the linear model with limited feedback from the recipient (such as coupons or surveys that the recipient acts upon).
The most important element of this communication model is Feedback. The feedback continues the communication process; therefore, it is a
transactional model of communication. It also represents the one-way process of
communication.
https://brainly.in/question/27181699
https://brainly.in/question/20904266
#SPJ3