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Q 1.
Name the element that contains two shells and both are filled with electrons?
Ans.
Neon.
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Q 2.
In which group of modern periodic table halogen gases are arranged?
Ans.
17.
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Q 3.
How many elements are arranged in the modern periodic table?
Ans.
18.
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Q 4.
Name the scientist who gave the law of octave?
Ans.
Newland.
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Q 5.
Name the element which was discovered later replaced Mendeleev's Eka silicon?
Ans.
Germanium.
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Q 6.
Which halogens are in gaseous state?
Ans.
Bromine.
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Q 7.
Name the noble gas which is not present in our atmosphere?
Ans.
Radon.
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Q 8.
How many metalloids are there in modern periodic table?
Ans.
6.
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Q 9.
Atomic radius of hydrogen Atom?
Ans.
37 picometre.
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Q 10.
Which metal is known as white gold?
Ans.
Platinum.
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Q 11.
Number gases in modern periodic table?
Ans.
11.
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Q 12.
How many non-metal are in modern periodic table?
Ans.
20.
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Q 13.
While moving from upper to down the group, the atomic size?
Ans.
Increases.
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Q 14.
Name the element that has a total of 3 shells, with 4 electrons in its valance shel
Ans.
Silicon.
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Q 15.
Which metal is known as metal of hope?
Ans.
Uranium.
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Q 16.
Name the metal that sinks in mercury?
Ans.
Gold.
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Q 17.
On the basis of which modern periodic table is arranged?
Ans.
Increasing atomic number.
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Q 18.
While going from left to right in the periodic table size of elements?
Ans.
Decreases.
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Q 19.
Which hand side of the metals like Mg and Na lies in the periodic table?
Ans.
Left hand side.
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Q 20.
Name the element that has electronic configuration is 2,8,2?
Ans.
Magnesium.
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