The dissociation constant Kd for a receptor-ligand complex is

a. a measure of the affinity of the receptor for the ligand.

b. the concentration of the ligand at which half of the receptors contain bound ligand.

c. a measure of the time it takes for a ligand to be converted to a product.

d. equal to koff/kon 

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#Question id: 20150

#XL - P Chemistry

The number of electrons in the M shell of the clement with atomic number 24 is

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#Question id: 20151

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Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the

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#Question id: 20152

#XL - P Chemistry

The exact path of electron 2p-orbital cannot be determined.” The above statement is based

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#Question id: 20153

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The maximum number of electrons in a subshell is given by the expression

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#Question id: 20154

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If r is the radius of first orbit, the radius of nth orbit of the H atom will be

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#Question id: 20155

#XL - P Chemistry

The energy of hydrogen atom in its ground state is -13·6 eV. The energy of the level corresponding to the quantum number n = 5 is