【 】How Many Neutrons Does Arsenic(As) Have?||Number of Neutrons in Arsenic【As】
How Many Neutrons Does Arsenic(As) Have?
Answer:
Arsenic has 42 neutrons for this isotope.
Explanation:
Hello, chemistry lover! today we are going to help you to find out how many neutrons arsenic (As) have in just 3 steps.
To find out the number of neutrons for arsenic (As) ,we have to have knowledge about atomic number,atomic mass,mass number of arsenic (As)
.Click picture to see clearly.
Step-1:
●The atomic number of arsenic (As) is the number of protons in arsenic (As) 's nucleus.
●The atomic mass of arsenic (As) is the average number of protons plus neutrons of all the isotopes of arsenic (As) .
●The masss number of arsenic (As) is the number of protons plus neutrons of a specific isotope of arsenic (As) .
Step-2:
We need to convert atomic mass of arsenic (As) to mass number of arsenic (As) by rounding if necessary (In case of fraction) .
From periodic table,
●Atomic number of arsenic (As) is 33.
●Atomic mass of arsenic (As) is 74.92
●To find out mass number,we need to round 74.92 to a whole number.So,by rounding,we are getting mass number of arsenic (As) .The mass number of arsenic (As) is 75.
Step-3:
By the difference between mass number and atomic number of arsenic (As) ,we get the number of neutrons in arsenic (As) .
●Number of neutrons=75-33=42
In another way,
●Mass number=Protons +Neutrons
Or,75 =33 +Neutrons
Or,75-33=Neutrons
Therefore,
Neutrons=42
Therefore,the number of neutrons in arsenic (As) is 42 here for this isotope.Remember that neutrons are present in the nucleous of arsenic (As) and it's charge is zero.
●Number of protons in arsenic (As) is 33.Protons are present in the nucleus of arsenic (As) .
● Number of electrons in arsenic (As) is 33.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of arsenic (As) .
Continue
Hello, chemistry lover! today we are going to help you to find out how many neutrons arsenic (As) have in just 3 steps.
.Click picture to see clearly.
Step-1:
●The atomic number of arsenic (As) is the number of protons in arsenic (As) 's nucleus.
●The atomic mass of arsenic (As) is the average number of protons plus neutrons of all the isotopes of arsenic (As) .
●The masss number of arsenic (As) is the number of protons plus neutrons of a specific isotope of arsenic (As) .
Step-2:
We need to convert atomic mass of arsenic (As) to mass number of arsenic (As) by rounding if necessary (In case of fraction) .
From periodic table,
●Atomic number of arsenic (As) is 33.
●Atomic mass of arsenic (As) is 74.92
●To find out mass number,we need to round 74.92 to a whole number.So,by rounding,we are getting mass number of arsenic (As) .The mass number of arsenic (As) is 75.
Step-3:
By the difference between mass number and atomic number of arsenic (As) ,we get the number of neutrons in arsenic (As) .
●Number of neutrons=75-33=42
In another way,
●Mass number=Protons +Neutrons
Or,75 =33 +Neutrons
Or,75-33=Neutrons
Therefore,
Neutrons=42
Therefore,the number of neutrons in arsenic (As) is 42 here for this isotope.Remember that neutrons are present in the nucleous of arsenic (As) and it's charge is zero.
●Number of protons in arsenic (As) is 33.Protons are present in the nucleus of arsenic (As) .
● Number of electrons in arsenic (As) is 33.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of arsenic (As) .
Continue
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