Answer:
The unknown element is Sb
Explanation:
The first thing we must note is that the unknown element must be a member of group 15 in the periodic table. This is clear from the fact that the two oxides formed are X2O3 and X2O5. This implies that the unknown element X must have a valency of 3 or 5. This corresponds to our knowledge that the outermost electron configuration of group 15 elements is ns2np3. Hence, group fifteen elements can have a valency of 3 or 5.
The electronic configuration of antimony is; [Kr]4d10 5s2 5p3. This implies that the atom is paramagnetic since there are three unpaired 5p electrons. The oxides of antimony are known to be amphoteric. An ampohoteric oxide reacts with both acid and base, hence the answer.
Answer:
Diffusion of Innovation (DOI) Theory, developed by E.M. Rogers in 1962, is one of the oldest social science theories. It originated in communication to explain how, over time, an idea or product gains momentum and diffuses (or spreads) through a specific population or social system
Explanation:
steps of divusion if you need it are
Knowledge. The first step in the diffusion of innovation is knowledge. ...
Persuasion. Persuasion is the point at which the prospective adopter is open to the idea of purchase. ...
Decision. Eventually the would-be adopter must make a decision. ...
Implementation. ...
Confirmation.
Happy to help;)!
Answer:
Block Y is heavier than Block X.
Explanation:
Lava means wash in spanish.
12 Oxygen, 2 Aluminum, and 1 Sulfur. let me know if you need anything else.