question_answer

Write the electronic configuration of two elements X and Y whose atomic numbers are 20 and 17 respectively. Write the molecular formula of the compound formed when element X reacts with product and also state the nature of the bond formed between both the elements.

Answer:

X = 20; 2, 8, 8, 2

Y = 17; 2, 8, 7

\[\underset{2,8,8,2}{\mathop{X}}\,\to {{X}^{2+}}+2{{e}^{-}}\]

\[2Y+2{{e}^{-}}\to 2{{Y}^{-}}\]

Electron-dot structure:

The nature of bond will be ionic.