Krypton (Kr) and bromine (Br) are Period 4 elements that are also called p-block elements. Krypton is a noble gas while bromine is a halogen.
While comparing the stability of the two elements, Krypton is more stable than bromine. This is because being a noble gas, Krypton follows the octet rule and maintains its stability. Bromine has 35 electrons and the outer most valence shell has 7 electrons so its unstable. Krypton has 36 electrons and 8 electrons in the valence shell so its stable.
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The maximized value of the objective function is 38
The objective function is given as:
Max P = 5x + 3y
The constraints are given as:
- 3x + 6y ≤ 48
- 2x + 8y ≤ 56
- x ≥ 0 y ≥ 0
To do this, we make use of the graphical method.
See attachment for the graph of the constraints.
From the graph, we have the following feasible point

Substitute 4 for x and 6 for y in the objective function.

So, we have:



Hence, the maximized value of the objective function is 38
Read more about objective functions at:
brainly.com/question/16826001