Which one of the elements has the highest ionisation energy?
Which one of the elements has the highest ionisation energy? Options (a) [Ne] 3s²3p¹ (b) [Ne] 3s²,3p² (c) [Ne] 3s²,3p³…
7 years ago
Easy
Which one of the following pairs is isostructural – same shape and hybridization
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)? Options (a) [BCl₃ and BrCl₃⁻]…
7 years ago
Which of the following is electron-deficient?
Which of the following is electron-deficient? Options (a) (SiH₃)₂ (b) (BH₃)₂ (c) PH₃ (d) (CH₃)₂ Correct Answer: (BH₃)₂Explanation:Electron deficient molecules…
7 years ago
What is the value of electron gain enthalpy of Na+ if IE₁ of Na =5.1 eV ?
What is the value of electron gain enthalpy of Na+ if IE₁ of Na =5.1 eV ? Options (a) –5.1…
7 years ago
The energy of an electron in the nth Bohr orbit of hydrogen atom is
The energy of an electron in the nth Bohr orbit of hydrogen atom is Options (a) –(13.6/n⁴)eV (b) –(13.6/n³)eV (c)…
7 years ago
The energy of second Bhor orbit of the hydrogen atom is -328 kJ mol⁻¹, hence the enregy
The energy of second Bhor orbit of the hydrogen atom is -328 kJ mol⁻¹, hence the enregy of fourth Bohr…
7 years ago
The number of moles of KMnO₄ that will be needed to react with one mole of
The number of moles of KMnO₄ that will be needed to react with one mole of sulphite ion in acidic…
7 years ago
The equivalent weight of phosphoric acid(H₃PO₄) in the reaction
The equivalent weight of phosphoric acid(H₃PO₄) in the reaction, NaOH + H₃PO₄ → NaH₂PO₄ + H₂O is Options (a) 59…
7 years ago
What is the equivalent weight of SnCl₂ in the following reaction
What is the equivalent weight of SnCl₂ in the following reaction, SnCl₂+Cl₂→ SnCl₄? Options (a) 95 (b) 45 (c) 60…
7 years ago
0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc
0.037g of an alcohol, R-OH was added to C₂H₅Mgl and the has evolved measured 11.2cc at STP. The molecular mass…
7 years ago