TPO 16 Development of the Periodic - 英檢

想請教這篇閱讀的最後一題

The structure of the periodic table appeared to limit the number of possible
elements. It was therefore quite surprising when John William Strut (Lord
Rayleigh, discovered a gaseous element in 1894 that did not fit into the
previous classification scheme. A century earlier, Henry Cavendish had noted
the existence of a residual gas when oxygen and nitrogen are removed from
air, but its importance had not been realized. Together with William Ramsay,
Rayleigh isolated the gas (separating it from other substances into its pure
state) and named it argon. Ramsay then studied a gas that was present in
natural gas deposits and discovered that it was helium, an element whose
presence in the Sun had been noted earlier in the spectrum of sunlight but
that had not previously been known on Earth. Rayleigh and Ramsay postulated
the existence of a new group of elements, and in 1898 other members of the
series (neon, krypton, and xenon) were isolated.

Answer Choices
○ Lord Rayleigh provided evidence that the structure of the I—Ramsay and
Lord Rayleigh challenged the importance of the periodic table limited the
potential number of elements.
○ Chemical research that Henry Cavendish had done a centuryearlier.
○ Isotopes of a given element have exactly the same physical properties, but
their chemical properties are slightly different.
○ Mendeleyev and Meyer organized the known elements into a F chart that
revealed periodic recurrences of chemical and physical properties.
○ Mendeleyev's successful prediction of the properties of then- r unknown
elements lent support to the acceptance of the periodic law.
○In the 1890's, Ramsay and Lord Rayleigh isolated argon and proposed the
existence of a new series of elements.

答案是4,5,6

我選1,4,5

因為我覺得1的選項就在段落的第一句啊?

而且第六的選項，應該是發現argon & helium之後才提出假說的吧?

還是答案錯了呢

請版大們指教！

謝謝QQ

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