Brainliesttt asap!me : )

what type of orbital is dumbbell-shaped?

s orbital
p orbital
d orbital
f orbital

Answer : The correct option is, p orbital

Explanation :

As we know that there are many sub-levels that are s, p, d, f, g and so on. The sub-level are oriented in three directions along the x, y and z axis.  

The 's' sub-level has one orbital that are spherically shaped.

The 'p' sub-level has three orbitals that are dumbbell shaped.

The 'd' sub-level has five orbitals that are double-dumbbell shaped.

The 'f' sub-level has seven orbitals that are complex flower shaped.

Hence, the 'p' sub-level has three orbitals that are dumbbell shaped.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.