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Test: Periodic Table of Elements - Chemistry MCQ


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10 Questions MCQ Test Inorganic Chemistry - Test: Periodic Table of Elements

Test: Periodic Table of Elements for Chemistry 2024 is part of Inorganic Chemistry preparation. The Test: Periodic Table of Elements questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Periodic Table of Elements MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Periodic Table of Elements below.
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Test: Periodic Table of Elements - Question 1

Elements in the same column of the periodic table have:

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The elements having similar valence shell electrons have similar chemical properties like reactivity, nature of bonds in their molecules etc. Hence in the modern periodic table, they were grouped in vertical columns called ‘groups’.

Test: Periodic Table of Elements - Question 2

How many periods are there in a modern periodic table?

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Modern periodic table places elements having the same maximum principal quantum number in one period. There are seven periods, though the seventh period consists of many unstable artificial elements.

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Test: Periodic Table of Elements - Question 3

There are seventeen non-metals in the periodic table. Unlike metals in the same period, they have higher:

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Non-metals are located at the right end of their respective periods. As we move from left to right in a period or from top to bottom in a group, atomic number increases. Due to increasing charge on the nucleus, atomic size also decreases on moving right in a period. This is also the reason of increasing electronegativity or decreasing electropositivity.

Test: Periodic Table of Elements - Question 4

Uranium and Thorium are two important elements in the nuclear power industry. In which block of the modern periodic table are they placed?

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Ground state Uranium and Thorium atoms have partially or totally empty 5f-orbitals. They are members of the actinide family and their naturally occurring isotopes are radioactive.

Test: Periodic Table of Elements - Question 5

Radon is the sixth member of group 18 of the modern periodic table. Unlike other members of this group, Radon:

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Radon is a radioactive noble-gas at room temperatures. It is one of densest gases and the only naturally occurring radioactive gas. However, its daughter nuclei are solids. Not many compounds of Radon are known.

Test: Periodic Table of Elements - Question 6

As we move down a group, electronegativity of elements generally:

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As we move down a group, atomic size increases which means that the valence electrons are much farther from the nucleus and hence experience less force of attraction. Hence the electronegativity decreases down the group.

Test: Periodic Table of Elements - Question 7

Temporary IUPAC systematic symbol for the synthetic element 117 is:

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IUPAC has assigned temporary systematic name Ununseptium [= Un(1) +un(1) + sept(7) + ium] to the element with atomic number 117. It belongs to group 17 of the periodic table and is predicted to be a halogen. As of 2015, its discovery has not been officially confirmed.

Test: Periodic Table of Elements - Question 8

d-block elements generally show multiple oxidation states. An exception to this is:

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Due to a small increase in successive ionization enthalpies, most d-block elements exist in multiple oxidation states. However, Zn(I) compounds are very rare and the ion exists in a dimeric form.

Test: Periodic Table of Elements - Question 9

Moving down a group, which of the following properties generally diminishes?

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Due to the addition of one shell on moving down a group, the neighbourhood of the atom is better shielded by the electrons from an attractive pull of the nucleus.

Test: Periodic Table of Elements - Question 10

Ionization energy decreases down the group. It is the energy required by an isolated gaseous atom to form an anion.

Detailed Solution for Test: Periodic Table of Elements - Question 10

Ionization energy is the energy required by an isolated gaseous atom to lose the least tightly bound electron to form a cation. It decreases down the group as atomic size increases.

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