निम्न इलेक्ट्रॉनिक विन्यास वाले तत्वों में प्रत्येक की फैमिली बताइए-
(a) `ns^(2)np^(3)`, (b) `ns^(2)np^(4)`, (c ) `ns^(2)`

Electronic configuration of valence shell of four elements, A,B,C and D are? (A) ns^(2),np^(2) (D) ns^(2),np^(3) (B) ns^(2),np^(4) (D) ns^(2),np^(5) Arrange them in increasing order of IE_(2) :

The electronic configuration of chalcogens is : 1) ns^2np^2 2) ns^2 np^3 3) ns^2 np^4 4) ns^2np^5

Assign the position of the element having outer electronic configuration, (A) ns^(2)np^(2) (n=6) (B) (n-1)d^(2)ns^(2)" "(n=4) (C) (n-2)f^(7)(n-1)d^(-1)ns^(2) (n=6) Which of the following statement(s) is/are correct?

Assign the position of the element having outer electronic configuration, (A) ns^(2)np^(2) (n=6) (B) (n-1)d^(2)ns^(2)" "(n=4) (C) (n-2)f^(7)(n-1)d^(-1)ns^(2) (n=6) Which of the following statement(s) is/are correct?