According to the rydberg equation, the longest wavelength (in nm) in the series of h- atom lines with a) 1875 nm b) 1458 n ans: a c) 820 nm d) 656 nm e) 365 nm

A) 1875 nm

Explanation:

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In this case, the Rydberg equation is shown below:

For the series of H- atom, one assigns: as this is the Paschen series with emission down to the level. Now, we must consider that the longest wavelength is from the nearest upper level to the level, that is, the level. In such a way, the resulting wavelength is computed as shown below:

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explanation:

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l