The Answer is D Why Because<span> clearly, including a scenario of the second and third steps as proof!!</span>
To answer this problem, we need to count the electrons in the given configuration. The complete configuration is 1s2 2s2 2p6 3s2 3p6. There are 2+2+6+2+6 equal to 18 electrons. We find next the element with an atomic number of 18. That element is noble gas argon.
Answer:
Convection currents are caused by the movement of the magma in the mantle.
Explanation: