Given below is the electronic configuration of elements A, B, C, D : (A)` 1s^2 2s^2, (B) 1s^2 2s^2 2p^6 3s^2,(C) 1s^2 2s^2 2p^6 3s^2 3p^3, (D) 1s^2 2s^2 2p^6` , Which are the elements coming within the same period?

Given below is the electronic configuration of elements A,B,C,D: (A) 1s^2 2s^2, (B)1s^2 2s^2 2p^6 3s^2, (C) 1s^2 2s^2 2p^6 3s^2 3p^3, (D) 1s^2 2s^2 2p^6 , Which are the noble gas elements?

Given below is the electronic configuration of elements A,B,C,D: (A) 1s^2 2s^2,(B)1s^2 2s^2 2p^6 3s^2,(C)1s^2 2s^2 2p^6 3s^2 3p^3,(D)1s^2 2s^2 2p^6 , Which are the ones coming within the same group?

Given below is the electronic configuration of elements A,B,C,D: (A) 1s^2 2s^2, (B) 1s^2 2s^2 2p^6 3s^2, (C) 1s^2 2s^2 2p^6 3s^2 3p^3, (D) 1s^2 2s^2 2p^6 , To which group and period does the element 'C' belong?

1s^2 2s^2 is the electronic configuration of which element?

1s^2 2s^2 2p^1 is the electronic configuration of

What is the electronic configuration of Ca ? 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 (Ar)4s^2 (Ne) 3s^2 3p^6 4s^2 1s^2 2s^2 2p^6 3s^2 5s^2 3p^6

The electronic configuration of four elements L, P, Q and R are given below. L- 1s^2 2s^2 2p^4 P- 1s^2 2s^2 2p^6 3s^1 Q- 1^2 2s^2 2p^6 3s^2 3p^5 R- 1s^2 2s^2 2p^6 3s^2 . Which of the following are correct compounds formed by these elements?

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide a theoretical foundation for the periodic classification. The horizontal rows are called periods. There are altogether seven periods. The first period consists of 2 elements. The subsequent periods consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have maximum of 32 elements. Elements having similar outer electronic configurations in their atoms are grouped in vertical columns. These are referred to as groups or families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. All the elements are classified into four blocks, i.e., s-block, p-block, d-block, and f-block depending on the type of atomic orbitals that are being filled with electrons. Elements A, B, C, D and E have the following electronic configuration: (A) 1s^2, 2s^2 2p^1 (B) 1s^2, 2s^2 2p^6 , 3s^2 3p^1 (C ) 1s^2, 2s^2 2p^6 , 3s^2 3p^3 (D) 1s^2 , 2s^2 2p^6 , 3s^2 3p^5 (E) 1s^2 , 2s^2 2p^6 , 3s^2 3p^6 Which among these will belong to same group in the periodic table ?

Given below is the electronic configuration of elements A,B,C,D. 1s^2 2s^2 Which are the elements coming with in the same period?

Electronic configuration of an element is 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^1 . It belongs to