SiSTEM Periodik Unsur

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| By Wilda_khair
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Wilda_khair
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Quizzes Created: 1 | Total Attempts: 510
Questions: 10 | Attempts: 510

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Sistem Periodik Unsur - Quiz

Questions and Answers
  • 1. 

    Berikut ini adalah sifat-sifat logam, kecuali...

    • A.

      Kerapatan tinggi

    • B.

      Bersifat konduktor

    • C.

      Oksidasinya bersifat asam

    • D.

      Mengkilap

    • E.

      Dapat ditempa

    Correct Answer
    C. Oksidasinya bersifat asam
    Explanation
    Oksidasinya bersifat asam tidak termasuk sifat-sifat logam. Sifat-sifat logam yang umum meliputi kerapatan tinggi, bersifat konduktor, mengkilap, dan dapat ditempa. Oksidasi logam umumnya bersifat basa, tidak asam.

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  • 2. 

    Unsur X, Y dan Z memenuhi hukum Triade Dobereiner, Jika berat atom unsur X dan Z berturut-turut adalah 7 dan 39, maka berat atom unsur Y adalah...

    • A.

      46

    • B.

      23

    • C.

      14

    • D.

      18.5

    • E.

      92

    Correct Answer
    B. 23
    Explanation
    The question mentions the Law of Triads by Dobereiner, which states that elements with similar chemical properties can be grouped into triads based on their atomic weights. In this case, elements X and Z have atomic weights of 7 and 39 respectively. To find the atomic weight of element Y, we need to find the average of the atomic weights of X and Z. (7 + 39) / 2 = 23. Therefore, the atomic weight of element Y is 23.

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  • 3. 

    Salah satu kelemahan hukum oktaf Newlands adalah belum mengatur unsur-unsur pada golongan...

    • A.

      Logam

    • B.

      Alkali

    • C.

      Gas mulia

    • D.

      Halogen

    • E.

      Alkali tanah

    Correct Answer
    C. Gas mulia
    Explanation
    The Newlands octaves law is a classification system for elements based on their atomic weights and properties. One of its weaknesses is that it does not account for the elements in the noble gas group. Noble gases have unique properties and characteristics that distinguish them from other elements, such as their low reactivity and full outer electron shells. Therefore, the Newlands octaves law fails to include the noble gases in its classification system.

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  • 4. 

    Periode dalam sistem periodik menyatakan...

    • A.

      Banyaknya elektron yang dimiliki oleh atom unsur yang bersangkutan

    • B.

      Banyaknya elektron valensi unsur yang bersangkutan

    • C.

      Banyaknya lintasan elektron yang dimiliki oleh atom unsur yang bersangkutan

    • D.

      Sifat-sifat unsur yang sama

    • E.

      Banyaknya elektron yang dapat dilepaskan oleh atom unsur yang berbeda

    Correct Answer
    C. Banyaknya lintasan elektron yang dimiliki oleh atom unsur yang bersangkutan
    Explanation
    The correct answer is "Banyaknya lintasan elektron yang dimiliki oleh atom unsur yang bersangkutan." This is because the period in the periodic table represents the number of electron shells or energy levels that an atom of the element has. Each period corresponds to the number of shells an atom has, with the first period having only one shell and subsequent periods having more shells.

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  • 5. 

    Unsur-unsur di bawah ini berada dalam satu golongan dalam sistem periodik, kecuali...

    • A.

      Arsen

    • B.

      Nitrogen

    • C.

      Selenium

    • D.

      Fosfor

    • E.

      Bismut

    Correct Answer
    C. Selenium
    Explanation
    All the elements listed in the options are nonmetals except for selenium. Nonmetals are located on the right side of the periodic table and tend to have properties opposite to those of metals. Selenium, on the other hand, is a metalloid, which means it has properties of both metals and nonmetals. Therefore, the correct answer is selenium.

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  • 6. 

    Hubungan antara 20Ca dan 38Sr adalah...

    • A.

      Merupakan unsur metaloid

    • B.

      Merupakan unsur non logam

    • C.

      Mempunyai jumlah kulit yang sama

    • D.

      Terletak dalam golongan VIIA

    • E.

      Terletak dalam golongan IIA

    Correct Answer
    E. Terletak dalam golongan IIA
    Explanation
    The correct answer is "Terletak dalam golongan IIA". This is because both 20Ca (Calcium) and 38Sr (Strontium) belong to Group IIA in the periodic table, which is the alkaline earth metals group. They have similar chemical properties and share the same number of valence electrons, which makes them part of the same group.

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  • 7. 

    Jari-jari atom yang terkecil dimiliki oleh...

    • A.

      O

    • B.

      F

    • C.

      Be

    • D.

      Li

    • E.

      Na

    Correct Answer
    B. F
    Explanation
    The correct answer is F (Fluorine). Fluorine has the smallest atomic radius compared to the other elements listed. This is because fluorine has the highest effective nuclear charge (the attractive force between the positively charged nucleus and the negatively charged electrons), which pulls the electrons closer to the nucleus, resulting in a smaller atomic radius.

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  • 8. 

    Data keelektronegatifan beberapa unsur-unsur sebagai berikut. J = 1.2 K = 2.5 L = 3.0 M = 3.5 N = 4.0 Unsur yang paling mudah mengikat elektron adalah...

    • A.

      J

    • B.

      K

    • C.

      L

    • D.

      M

    • E.

      N

    Correct Answer
    E. N
    Explanation
    The electronegativity of an element indicates its ability to attract electrons. The higher the electronegativity value, the stronger the element's ability to attract electrons. In this case, N has the highest electronegativity value of 4.0, indicating that it has the strongest ability to attract electrons compared to the other elements listed. Therefore, N is the element that most easily binds electrons.

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  • 9. 

    Diantara unsur berikut, unsur manakah yang memiliki energi ionisasi terbesar?

    • A.

      B

    • B.

      C

    • C.

      N

    • D.

      O

    • E.

      F

    Correct Answer
    E. F
    Explanation
    The element with the highest ionization energy among the given options is F (Fluorine). Ionization energy refers to the energy required to remove an electron from an atom or ion in the gaseous state. Fluorine has the highest ionization energy because it has the smallest atomic radius among the elements listed. The smaller the atomic radius, the stronger the attraction between the nucleus and the electrons, making it more difficult to remove an electron.

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  • 10. 

    Unsur terbanyak yang ditemukan hingga saat ini adalah...

    • A.

      Alkali

    • B.

      Logam

    • C.

      Halogen

    • D.

      Gas mulia

    • E.

      Alkali tanah

    Correct Answer
    B. Logam
    Explanation
    Logam adalah unsur yang paling banyak ditemukan hingga saat ini. Unsur logam memiliki sifat konduktifitas panas dan listrik yang tinggi serta kekuatan yang kuat. Unsur logam juga memiliki berbagai kegunaan dalam kehidupan sehari-hari, seperti pembuatan peralatan elektronik, kendaraan, dan bangunan. Beberapa contoh unsur logam yang umum ditemukan adalah besi, aluminium, tembaga, dan seng.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 27, 2013
    Quiz Created by
    Wilda_khair
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