Question : Identify the last element from the fifth period.
Option 1: Helium
Option 2: Yttrium
Option 3: Rubidium
Option 4: Xenon
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Correct Answer: Xenon
Solution : The correct option is Xenon.
Xenon (Xe) is a chemical element found in Group 18 (also known as the noble gases) of the periodic table. It has an atomic number of 54 and is located in period 5. Xenon is a colourless, odourless and inert gas known for its low reactivity and is often used in various applications, including in lighting (xenon lamps) and as a component in some lasers.
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Question : Identify the element one that does not belong to Group 1 of the Modern Periodic Table.
Option 1: Sodium
Option 2: Lithium
Option 3: Hydrogen
Option 4: Rubidium
Question : In 1955, which synthetic element was provisionally named Mendelevium in honour of Dmitri Mendeleev, who created one of the first periodic tables?
Option 1: Element 90
Option 2: Element 101
Option 3: Element 103
Option 4: Element 106
Question : What will be the atomic number of element X that is placed in period 2 and group 17?
Option 1: 8
Option 2: 7
Option 3: 10
Option 4: 9
Question : Which artificial element has been provisionally named seaborgium by American researchers in honour of Nobel Laureate Glenn T. Seaborg?
Option 1: Element 97
Option 2: Element 106
Option 3: Element 90
Option 4: Element 103
Question : The gas used for filling weather balloons is
Option 2: Hydrogen
Option 3: Air
Option 4: Nitrogen
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