1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following statements: I. The atoms of different elements are present in a compound in a fixed and definite ratio. II. In compounds like NaCl, the positive and negative entities are arranged in two dimensional structure. III. In NaCl, one Na +ion is surrounded by 12 Cl -ions and vice-versa. Choose the option with all the incorrect statements :

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Q. Consider the following statements :
I. The atoms of different elements are present in a compound in a fixed and definite ratio.
II. In compounds like $NaCl$, the positive and negative entities are arranged in two dimensional structure.
III. In $NaCl$, one $Na ^{+}$ion is surrounded by $12\, Cl ^{-}$ions and vice-versa.
Choose the option with all the incorrect statements :

Some Basic Concepts of Chemistry

Solution:

Statements $II$ and $III$ are incorrect.
It's correct form are as follows :
$II$. In such compounds, positive ( $Na ^{+}$ion) and negative ( $Cl ^{-}$ion) entities are arranged in a three-dimensional structure.
$III$. In $NaCl$, one $Na ^{+}$ion surrounded by $6 Cl ^{-}$ions and vice-versa.
Statement $I$ is correct.