Which of the following statements best describes the properties of aluminum-28?
a. aluminum-28 has a higher percent abundance in nature than aluminum-27
b. aluminum-28 has one more proton than aluminum-27.
c. when aluminum-28 undergoes beta-decay, magnesium-28 is produced.
d. when aluminum-28 undergoes beta decay, silicon-28 is produced.

d. When aluminum-28 undergoes beta decay, silicon-28 is produced.

Step-by-step explanation:

aluminum-27 has an abundance percentage >99.9%. aluminum-28 will have less than that.

so, option a is wrong.

Aluminum-28 has one more neutron than aluminum-27.Aluminum-28 will have 13 electrons, 13 electrons and 15 neutrons.Aluminum-27 will have 13 electrons, 13 electrons and 14 neutrons.

so,option b is wrong.

beta decay reaction for aluminum-28 is :

[where, represents, element A,

b: its mass number[=number of protons+number of neutrons in the element]

, c : atomic number[=number of protons in the element]

so, option c is wrong and option d is correct.

(-14+3/2b) - (1+8/2b) = -5 -5/2b(-10+b) + (7b-5) = 8b-15(7/2b-3) - (8+6b) = -5/2b-11(5+2b) + (2b+3/2) = 4b+ 13/2

Answer:

the image is given below

step-by-step explanation:

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this