Question

An atom of element X has an atomic number of 11 and a mass number of 23. .

a) What is the definition of atomic number?
b) How many protons, electrons and neutrons are in this atom?
c) A different atom of X has an atomic number of 11, but a mass number of 24. Give a
name for these two forms of X.
d) Would these two atoms have similar chemical properties? Give a reason for your
answer.​

Answer 1

a) the number of protons in an atom

b) 11 protons, 11 electrons and 12 neutrons.

c) Isotope

d) yes, they still have the same number of protons and electrons.

Step-by-step explanation:

b) Number of neutrons = mass number - atomic number

Atoms have the same number of electrons and protons

c) isotopes are atoms with the same number of protons but a different number of neutrons.

Hope this helped !

Answer 2

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Step-by-step explanation: