The wavelength correspending to maximum enregy for hydrogen is 91.2 nm
The wavelength correspending to maximum enregy for hydrogen is 91.2 nm. The corresponding wavelength for He⁺ ion is Options (a)…
7 years ago
Memory
According to Bohr’s theory, the angular momentum of electron in 5th orbit is
According to Bohr's theory, the angular momentum of electron in 5th orbit is Options (a) 25 h/π (b) 1.0 h/π…
7 years ago
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride
If Nₐ is Avagadro number then number of valence electrons in 4.2g of nitride ions (N³⁻) is Options (a) 2.4…
7 years ago
2.76 g of silver carbonate on being strongly heated yield a residue weighing
2.76 g of silver carbonate on being strongly heated yield a residue weighing Options (a) 2.16 g (b) 2.48 g…
7 years ago
Which has maximum number of molecules
Which has maximum number of molecules Options (a) 7 gm N₂ (b) 2 gm H₂ (c) 16 gm NO₂ (d)…
7 years ago
Which of the following electronic configuration an atom has the lowest ionisation
Which of the following electronic configuration an atom has the lowest ionisation enthalpy? Options (a) 1s²2s²sp³ (b) 1s²2s²2p⁵3s¹ (c) 1s²2s²2p⁶…
7 years ago
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres
A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres, the normality of…
7 years ago
The ratio of area covered by second orbital to the first orbital is
The ratio of area covered by second orbital to the first orbital is Options (a) 1 : 2 (b) 1…
7 years ago
The maximum number of molecules is present in
The maximum number of molecules is present in Options (a) 15 L of H₂ gas at STP (b) 5L of…
7 years ago
Amount of calcium oxide required, when it reacts with 852 g of P₄O₁₀ is
Amount of calcium oxide required, when it reacts with 852 g of P₄O₁₀ is Options (a) 100g (b) 1008g (c)…
7 years ago