Choose the answer that best completes the following statement: when an aluminum atom reacts so as to attain a noble gas electron configuration, choose the answer that best completes the following statement: when an aluminum atom reacts so as to attain a noble gas electron configuration, the atom gains five electrons. the noble gas configuration of argon is achieved. a 3- ion forms. the result is a configuration of 1s22s22p6. none of the above

The correct statement is : The atom gains five electrons.

Explanation:

Aluminum has the atomic number of 13.

The electronic configurations of aluminum is given:

So, in order to gain stability of noble gases aluminium ether have to gain 5 electrons or loose three elections.

By gaining five electrons its electron configuration gets same as that of the argon's electronic configuration.

So, the charge on the aluminium ion will be (5-).

clouds form

solid ice forms on leaves.

water droplets form on grass.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.