Question

S
(i) Name four ions that have this electronic configuration 1s'2s²2p. (ii) Calculate the wavelength (2) corresponding
to each of the following frequencies : (a) 2.5x10' Hz (b) 3.0x1022
(c) 1.50 x 10's-1​

Answer 1

Answer:

The electron configuration of an atom shows the number of electrons in each sublevel in each energy level of the ground state atom.  

Here, 1s  

2

2s  

2

2p  

6

3s  

2

3p  

2

3d  

5

4s  

1

 is ground state electronic configuration of Cr.

Explanation:

Wavelength, distance between corresponding points of two consecutive waves. ... “Corresponding points” refers to two points or particles in the same phase—i.e., points that have completed identical fractions of their periodic motion.