Lithium Element Protons Neutrons Electrons

The diminutive number for Lithium on the periodic tabular array is iii.

The atomic number basically represents the total number of protons in an atom.

Therefore, the total number of protons in Lithium is 3.

While defining the atomic mass of an element, information technology is generally the number of neutrons and protons of an chemical element.

As indicated on the periodic table, the atomic mass of Lithium is 7.

Therefore, the number of proton in Lithium = iii

Atomic Mass of the Lithium = 7

The atomic mass of an element = Number of Proton + Number of Neutron

Number of Neutron = Atomic mass of an element – Number of protons of the element

Number of Neutron = vii – 3

This implies, Number of Neutron = 4

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Now, coming to the number of electrons of Lithium, as an cantlet is neutral in charge, the number of protons that are positively charged is equal to the number of electrons that are negatively charged.

Therefore, the electrons in a Lithium ion need to be 3 merely lithium every bit a metal donates the electron.

So to accept a+ane charge, Lithium must have lost an ion.

Therefore the number of electrons in Lithium is 2.

Bottom Line!

We can conclude that the Lithium ion has

Atomic number = 3

Diminutive Mass = 7

Number of Protons = 3

Number of Neutrons = 4

Number of Electrons = 2

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