Question : Name the transuranium element with atomic number 106, created by bombarding californium-249 with oxygen-18 nuclei.
Option 1: Seaborgium
Option 2: Dubnium
Option 3: Hassium
Option 4: Copernicium
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Correct Answer: Seaborgium
Solution : The correct option is Seaborgium.
The transuranium element with atomic number 106, created by bombarding californium-249 with oxygen-18 nuclei, is seaborgium (Sg). Seaborgium was first synthesised in 1974 by a team of scientists at the Lawrence Berkeley National Laboratory in California, and it was named in honour of the American chemist Glenn T. Seaborg.
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Question : Which element of group 13 has the atomic number 113, and its electronic configuration is [Rn] 5f14 6d107s2 7p1?
Option 1: Gallium
Option 2: Indium
Option 3: Nihonium
Option 4: Thallium
Question : What is the name of the 87th element on the periodic table that has no known biological role because it has a half-life of only 22 minutes?
Option 1: Meitnerium
Option 3: Seaborgium
Option 4: Francium
Question : Which of the following is the proper number of electrons in 1 A of current?
Option 1: 6.25 × 1021
Option 2: 6.25 × 1018
Option 3: 6.25 × 1019
Option 4: 6.25 × 1015
Question : The most abundant element by number in the living system is:
Option 1: Nitrogen
Option 2: Hydrogen
Option 3: oxygen
Option 4: carbon
Question : If a + b + c = 0, then the value of (a + b – c)2 + ( b + c – a)2 + ( c + a – b)2 is:
Option 1: 0
Option 2: 8abc
Option 3: 4(a2 + b2 + c2)
Option 4: 4(ab + bc + ca)
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