What element has 5 protons 6 neutrons and 2 electrons

Asked by admin @ 06/08/2021 in Chemistry viewed by 368 People

Nucleus of an atom has 5 protons,6 neutrons.What is the atomic number, mass number,electronic configuration of yhe atoms

Answered by admin @ 06/08/2021

Given:

Number of protons = 5

Number of Neutrons = 6

To find:

Atomic number =?

Mass number = ?

Electronic configuration = ?

Formula to be used:

Mass number = No. of protons + No. of neutrons

Calculation:

Atomic number

The number of protons is equal to the atomic number of the element.
As the nucleus of atoms is composed of 5 protons, the atomic number of the element is identified as 5.

Mass number

To calculate the mass number of the element, the following formula must be used:
Mass number = No. of protons + No. of neutrons = 5+6= 11
Thus the mass number of the element is identified as 11.

Electronic configuration

The electronic configuration is written based upon the atomic number of the element.
As the atomic number of the element is identified as 5, its electronic configuration will be $1s^22s^22p^1$ .

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