What is the best way to describe the modern understanding of the location of electrons in an atom?
A. Electrons are placed within a mass of positively charged particles.
B. Electrons exist in specific orbits around the nucleus.
C. Electrons do not move and are in different levels within the atom.
D. Electrons are most likely to be found within certain regions around
the nucleus.

B. Electrons exist in specific orbits around the nucleus.

Explanation:

They orbit the outside of the atom.

B. Electrons exist in specific orbits around the nucleus.

Explanation:

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when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27