Find the unit digit of 83 × 87 × 93 × 59 × 61. 

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#Question id: 20228

#XL - P Chemistry

NH₃ has a higher boiling point than expected because

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#Question id: 20229

#XL - P Chemistry

The molecule with zero dipole moment is

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#Question id: 20230

#XL - P Chemistry

Molecular shaper of SF₄ , CF₄, XeF₄ are

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#Question id: 20231

#XL - P Chemistry

Which of the following has the regular tetrahedral structure ?

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#Question id: 20232

#XL - P Chemistry

In OF₂, number of bond pairs and lone pairs of electrons are respectively

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#Question id: 20233

#XL - P Chemistry

In O^-₂  , O₂ ,  O₂^-2  molecular species the total number of antibonding electrons respectively are