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Chemistry · PYQ NEET UG 2018

English

\( \mathrm{CaH}_{2}, \mathrm{BeH}_{2}, \mathrm{BaH}_{2} \) में आयनिक लक्षण का सही क्रम है

  1. A
    \( \mathrm{BeH}_{2}<\mathrm{CaH}_{2}<\mathrm{BaH}_{2} \)
  2. B
    \( \mathrm{CaH}_{2}<\mathrm{BeH}_{2}<\mathrm{BaH}_{2} \)
  3. C
    \( \mathrm{BeH}_{2}<\mathrm{BaH}_{2}<\mathrm{CaH}_{2} \)
  4. D
    \( \mathrm{BaH}_{2}<\mathrm{BeH}_{2}<\mathrm{CaH}_{2} \)
उत्तर और समाधान देखें

सही उत्तर · विकल्प A

\( \mathrm{BeH}_{2}<\mathrm{CaH}_{2}<\mathrm{BaH}_{2} \)

व्याख्या

As we move down the group, electronegativity of alkaline earth metals decreases, leading to an increase in ionic character of hydrides. Thus \( \mathrm{BeH}_{2}<\mathrm{CaH}_{2}<\mathrm{BaH}_{2} \).
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