Magnetic moment is a vecotr quantity

The resultant magnetic moment is dependent on the orientation in which the identical magnets were joined. If they are joined in opposite direction, the net magnetic moment will go to zero.

To find the magnetic moment of a chemical compound, you need to calculate the net magnetic moment of all the individual magnetic species in the compound. This can be done by considering the magnetic properties of each element and the overall molecular structure. Experimental techniques such as magnetic susceptibility measurements can also be used to determine the magnetic moment of a compound.

The magnitude of the electron's spin is greater than its magnetic moment because the spin of an electron contributes more to its intrinsic angular momentum than its magnetic moment does. The spin of an electron arises from its intrinsic properties and is a fundamental characteristic of the particle, whereas the magnetic moment is a consequence of the electron's charge and its motion.

The magnetic moment of the wire remains the same after it is bent into a semi-circular arc because the shape change does not affect the magnetic properties of the wire. The magnetic moment of an object is intrinsic and does not depend on its shape or orientation.