1] CMRR : If a signal is applied equally to both inputs of an op amp, so that the differential input voltage unaffected, the output should not be affected. The op-amp common mode rejection ratio (MRR) is the ratio of the common mode gain to differential mode gain ideal value is $\infty$ and practical value is AB.

2] Slew Rate : Slew rate is defined as the maximum rate at which the output voltage can change The > +1 op-amp has a typical slew rate of 0.5 volts per micro second $(V/ \mu s)$ This is the ultimate speed of typical 7<1

Ideal slew rate is $\infty$

3] Offset voltage : The input offset voltage is a parameter defining the differential DC voltage required between the inputs of an amplifier, especially an operational amplifier (op-amp) to make the output zero (for voltage amplifiers, 0 volts with respect to ground or between differential outputs depending on the output type. Ideal value is ov and practical value is 6mv.

4] Input Resistance : Input Resistance for the op-amp is infinite but for practical op-amp, it is 1M

5] Output Resistance : Ideally op-amps are supposed to have zero output impedance, that means the output voltage wont change, just in case the output current changes, but practically op-amp has 75 n output impedance.