Chemistry 5070 · O Level · Atomic structure and the Periodic Table
Atomic structure and the Periodic Table — practice question
Select answers from the particles listed below.
The particles listed are:
$^{79}_{35}\text{Br}$, $^{35}_{17}\text{Cl}$, $^{37}_{17}\text{Cl}$, $^{23}_{11}\text{Na}$, $^{17}_{8}\text{O}$, $^{39}_{20}\text{Ca}$, $^{37}_{17}\text{Cl}^-$, $^{64}_{29}\text{Cu}$, $^{20}_{10}\text{Ne}$, $^{18}_{8}\text{O}^{2-}$.
A particle may be used once, more than once, or not at all.
(a)[1]
Which particle contains only 20 protons in its nucleus?
(b)[1]
Which particle has a nucleon number of 35?
(c)[1]
Which particle has an electronic structure of 2.8.8?
(d)[1]
Which particle is an atom with only 10 neutrons in its nucleus?
(e)[1]
Which particle is an atom of a transition element?
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The particle is $^{39}_{20}\text{Ca}$.” …