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# Which of the following statements is not correct ?

(a) In oxyhaemoglobin $Fe^{2+}$ is paramagnetic

(b) During respiration the size of $Fe^{2+}$ increases when it changes from diamagnetic to paramagnetic state.

(c) Four heme group are present in haemoglobin

(d) Heme is the prosthetic group and it is non-protenic part.

(a) In oxyhaemoglobin $Fe^{2+}$ is paramagnetic