Question

1- An atom has a mass number of 24 and 13 neutrons. What is the atomic number of this atom?

2-Give the nuclear symbol for the isotope of argon for which A=38?
Enter the nuclear symbol for the isotope (e.g., 42He).

Answer 1

Working out the numbers of protons and neutrons
No of protons = ATOMIC NUMBER of the atom
The atomic number is also given the more descriptive name of proton number.
No of protons + no of neutrons = MASS NUMBER of the atom
The mass number is also called the nucleon number.

Answer 2

A:nucleon number
The Notation of the nuclear symbol (with a number in the top left and bottom left) tells you the "Z" and "A" of the atom.
A is places in the top
Z is placed in the bottom
number of e-=number of p+=18 proton and electron in Argon
Note: Number of neutron=Nucleon Number-proton
No.of neutron-20

Answer 3

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Answer 4

your most welcome @fatima236 :). i am glad to help