According to Aufbau's principle, which of the three 4d, 5p and 5s will be filled with electrons first

According to Aufbau's principle, which of the three 4d, 5p and 5s will

1.	According to Aufbau's principle, which of the three 4d, 5p and 5s will be filled with electrons first
Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/4d-318718" style="font-weight:bold;" target="_blank" title="Click to know more about 4D">4D</a><br/>5p<br/>5s<br/>4d and 5s will be filled simultaneously</p>Solution :According to the Aufbau's <a href="https://interviewquestions.tuteehub.com/tag/principle-1166255" style="font-weight:bold;" target="_blank" title="Click to know more about PRINCIPLE">PRINCIPLE</a>, electron will first <a href="https://interviewquestions.tuteehub.com/tag/enters-972302" style="font-weight:bold;" target="_blank" title="Click to know more about ENTERS">ENTERS</a> in those <a href="https://interviewquestions.tuteehub.com/tag/orbital-1138169" style="font-weight:bold;" target="_blank" title="Click to know more about ORBITAL">ORBITAL</a> which have least energy . So decreasing <a href="https://interviewquestions.tuteehub.com/tag/order-1138220" style="font-weight:bold;" target="_blank" title="Click to know more about ORDER">ORDER</a> of energy is 5p gt 4d gt 5s</body></html>