Metallic bonds share electrons

a
unequally in all directions
b
unequally in two directions
c
equally in two directions
d
equally in all directions

Explanation:

Metallic bond

It is the sharing of electrons between metal and metal .

It is not same as ionic or covalent bond .

As we know , the metals are quite big in size therefore , their electrons keep on moving in a crystal .

These mobile electrons and positively charged metals ions possess attraction due to opposite charges .

This metallic character is responsible for many characters that we observe in metals like good conductor of heat and electricity etc .

Metals behave as good conductor

The reason behind being good or bad conductor is to have free mobile electrons that can act as carrier and conduct electricity .

On the other hand , good conductor is often good conductor of heat because heating effect is the application of electric current

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.