Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
JEE Main & Advanced
Chemistry
Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति
Question Bank
Ionisation Energy
question_answer
The first four ionization energy values of an element are 191, 578, 872 and 5962 kcal. The number of valence electrons in the element is
A)1
B)2
C)3
D)4
Correct Answer:
C
Solution :
Since the IV, I.E. is very high. Thus electron is to be removed from stable configuration.