For fe, its atomic number is 26 and its mass number is 56. how many neutrons does it have? a 26 b 30 c 56 d 82 plato

Answer : The correct option is, (B) 30

Explanation :

Atomic number : It is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Atomic mass : It is defined as the sum of number of protons and number of neutrons.

Atomic mass = Number of protons  + Number of neutrons

or,

Atomic mass = Atomic number  + Number of neutrons

As we are given that,

The element is. Fe

Atomic number = 26

Mass number or atomic mass = 56

Atomic mass = Atomic number  + Number of neutrons

Number of neutrons = Atomic mass - Atomic number

Number of neutrons = 56 - 26

Number of neutrons = 30

Therefore, the number of neutrons are, 30

c8h10 is your answerr

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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