Question

IF an element.'X' has mass number 11 and it has 6 neutrons, then write its representation

Answer 1

Answer:

Here is your answer....

'X' is an element ,then its

Atomic mass (A) = 11

No. of Nutrons(n) = 6

Therefore, We have to find the Atomic numbers.

N = A - Z ---------(formula)

6 = 11- Z

Z = 11-6

Z = 5

Therefore,the element 'X' will be represented as

11 ====> X

5

$<marquee>$Hope it will help you....✌✌

Answer 2

Answer: $_5^{11}\textrm{B}$

Explanation:

General representation of an element is given as:   $_Z^A\textrm{X}$

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons  = Number of protons + 6  = 11

Number of protons = 5

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

Atomic number = Number of electrons = Number of protons  = 5

The representation will be $_5^{11}\textrm{B}$