name the element wsith the atomic number z= 15 and the atomic mass number 31.
How many electrons does the neutral of this lement have?
How many neutrons does the neutral atoms of this element have?
I know the element with the atomic number of 15 and atomic mass of 31 is phosphorus.
But how do u do the other part?
atomic number= number of protons, number of electrons.
number neutrons= massnumber-atomicnumber
To determine the number of electrons and neutrons in the neutral atom of phosphorus:
1. Electrons: Since the atomic number of phosphorus is 15, it indicates the number of electrons in a neutral atom. Therefore, phosphorus has 15 electrons.
2. Neutrons: The atomic mass of 31 represents the combined mass of protons and neutrons in the nucleus. The atomic number, 15, represents the number of protons. To find the number of neutrons, subtract the atomic number from the atomic mass.
Number of neutrons = Atomic mass - Atomic number
= 31 - 15
= 16
Therefore, the neutral atom of phosphorus has 15 electrons and 16 neutrons.
To determine the number of electrons in a neutral atom, you need to know its atomic number. In this case, the atomic number of the element is provided as 15, indicating that it has 15 protons. Since a neutral atom has an equal number of protons and electrons, the element also has 15 electrons.
To calculate the number of neutrons in an atom, subtract the atomic number from the atomic mass number. In this case, the atomic mass number is given as 31, and the atomic number is 15. Therefore, to find the number of neutrons, subtract 15 from 31. This gives us 16 neutrons.
In summary:
- The element with the atomic number 15 and atomic mass 31 is phosphorus.
- A neutral atom of phosphorus has 15 electrons.
- A neutral atom of phosphorus has 16 neutrons.
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