What is the certain reason why metals are magnetic?

Answer 1

The positive and negative ions line up and cause the objects to attract of repel each other.

So its kinda like those magnets with the N and the S on them but way smaller and in huge quantities

Answer 2

The atoms has a core consisting positively charged protons and neutrons, neutral ie without charge. Negatively charged electrons are moving aroung this nucleus. Due to this orbital motion, it creates a current loop which in turn produces a magnetic moment. As there are innumerable atoms the resultant of these magnetic moments may be zero or weak or strong one. If it is zero then it belongs to DIA magnetic and if it is so weak it belongs to PARA. If it is strong and get settled in the form of domains then it is known to be FERRO. Apart from orbital, spin magnetic moment is also to be taken into account. In short this whole creation is destined by two important physical quantities. They are electric and magnetic. Even space which is said to be vacuum is having properties such as electric permittivity and magnetic permeability. The product of these two values is found to be related to the velocity of light in vacuum. ie 3 x 108 m/s

C = 1/ ./u0 Eo

uo is the mu not and E0 is epsilon not.

uo = 4 pi x 10-7 H/m and Eo = 1/ (4 pi 9 x 109) F/m

Hence the secret lies in the space which is the first element. The other elements considered for the creation are air, fire, water and soil.

So interesting! Isn't it?

Answer 3

Iron and iron alloys become magnetized when they come in contact with a strong enough magnetic field.