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प्रश्न
Name three elements with filled outermost shells.
उत्तर १
Neon (Ne), argon (Ar), and xenon (Xe) have filled outermost shells.
उत्तर २
Helium (He), neon (Ne) and argon (Ar) are three elements (inert gases of group 18) that have a completely filled outermost shell.
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संबंधित प्रश्न
On what basis elements are arranged in periodi table now?
(a) Write its electronic configuration and determine its valency.
(b) Is it more reactive or less reactive than Ca (atomic number 20)? Justify your answer giving reason.
(c) Is it a metal or a non-metal?
(d) Write the formula of its oxide.
State Mendeleev's periodic law.
Use Mendeleev's Periodic Table to predict the formula of hydrides of carbon and silicon.
Beryllium : alkaline earth metal : : sodium: _______
Write scientific reason.
Mendeleev kept vacant places in the periodic table.
Which of the following oxide is most basic?
The total number of electrons present in the first twenty elements of the periodic table is ______
On moving from left to right in a period in the periodic table, the size of the atom.
