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Shielding constant of the 4S electron of chromium atom

Effective nuclear charge of the hydrogen atom

1 debye is equal to how many coulomb meters?

The number of water molecules in 250 ml of water is closest to
Given the density of water 1.0 gm ml^-1, Avogadro number =6.023 × 10²³

The oxidation number of chromium in Cr₂O₅

The Critical constants for water are 647 K, 22.09 MPa and 0.0566 dm³mol⁻¹, the value of Van der Waals constant b

Write down the common names of the following organic compound

CH₂CH₂CH₂CH=CH₂

The number of gaseous molecules left in a volume of 1 mm³ if it pumped out to give a vacuum of 10⁻⁶ mm Hg at 298

The oxidation number of Iron in [Fe(H₂O)₅(NO)⁺]SO₄

Boyle temperature of nitrogen gas if a = 1.4 atm lit² mol⁻² and b = 0.04 lit mol⁻¹

Arrange the following alkenes in order of increasing stability

1. Me₂C=CH₂
2. cis-MeCH=CHMe
3. trans-MeCH=CHMe
4. MeCH₂CH=CH₂

The oxidation number of phosphorus in Ba(H₂PO₂)₂

What is the radius of the Argon atom if Tc = - 122°C, Pc = 48 atm?

The number of molecules presents per ml of an ideal gas maintained the pressure of 7.6 ×10⁻³ mm of Hg at 0°C