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
Sample Paper
Topic Test - Periodic Table
question_answer
The electronic configuration of an element is \[1{{s}^{2}},\text{ }2{{s}^{2}}2{{p}^{6}},\text{ }3{{s}^{2}}3{{p}^{4}}\]. The atomic number of the element present just below the above element in the periodic table -
A)36
B)34
C)33
D)32
Correct Answer:
B
Solution :
[b] At. No. = 16(S) Next element below this element has atomic number = 16 + 18 = 34.