Its electron configuration is 1s 2 2s 2 2p 6 3s 1. The first ten electrons of the sodium atom are the inner-shell electrons and the configuration of just those ten electrons is exactly the same as the configuration of the element neon (Z = 10). This provides the basis for a shorthand notation for electron configurations called the noble gas
For example, Prussian blue analogue Co [Co 0.25 Fe 0.75 (CN) 6] with ordered and continuous channels was proposed as an iodine host, and the synergetic effects of transition metals electrocatalytic activity and fast Zn 2+ diffusion kinetics boost the conversion kinetics of I 2 ↔I − [75]; the rapid electron exchange and nanoscale interlayer
The physical properties of iodine are as follows: Solid iodine has a melting point of 387K. The boiling point of liquid iodine is 457K. Iodine has an electronegativity of 2.5 on Pauling’s scale. The ionic radius of iodine has been determined to be 0.216nm. Iodine has a high first ionization energy of 1008.7kJmol − 1.
Iodate ion. Two oxygen atoms receive 2 electrons from iodine to obtain full valence shells (s2 p6) and only one electron goes to the other oxygen atom. The bond between the iodine atom and oxygen atom is a covalent bond . The electrons from the iodine atom are not given but shared . This leaves iodine with a full sub-shell s2.
The next largest atom, beryllium, has 4 electrons, so its electron configuration is 1s 2 2s 2. Now that the 2s subshell is filled, electrons in larger atoms start filling the 2p subshell. Thus, the electron configurations for the next six atoms are as follows: B: 1s 2 2s 2 2p 1; C: 1s 2 2s 2 2p 2; N: 1s 2 2s 2 2p 3; O: 1s 2 2s 2 2p 4; F: 1s 2
