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Atomic Structure and Chemical Bonding — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYAtomic Structure and Chemical Bonding2 Marks
Question
Element $X$ has electronic configurations $2, 8, 18, 8, 1$. Without identifying $X,$
  1. Predict the sign and charge on a simple ion of $X.$
  2. Write if $X$ will be an oxidizing agent or a reducing agent. Why?
✓

Answer

a. $X^+$
Reason - Since the element X has 1 electron in its valence shell. So, it will lose an electron and gain noble gas configuration. Therefore it forms a cation ($X^+​​​​​​​$​​​​​​​​​​​​​​). The sign is positive and the charge is 1 proton.
b. X will be a strong reducing agent as it has the tendency to donate its valence electron.

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