Question

Consider two elements with atomic no. 37 and 53, the bond between their atoms would be

• A. covalent
• B. ionic
• C. coordinate
• D. metallic

Answer 1

Answer: (B)

$37=1s^2,2s^2,2s^6,3s^{2}3p^6,4s^2,3d^{10},4p^6,5s^1$ Thus, the element belongs to IA group and has valency +1. $53=1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^{10},5p^5$ Since, there are 7 electrons in the valence shell thus this element requires one electron to complete its octet, ie, has valency -1 Hence, element with atomic number 37 transfers its electron to the element having atomic number 53 and results in the formation of an ionic bond.