Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.
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Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
Helium atom has two neutrons. The mass of an atom is the sum of the masses of protons and neutrons present in its nucleus. Since helium atom has two protons, mass...
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Write down the electron distribution of chlorine atom. How many electrons are there in the L shell? (Atomic number of chlorine is 17).
2, 8, 7. The L shell has eight electrons
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In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires noble gas configuration by accepting
-2..............
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If the symbolic representation of an atom is 3X6, find its valency, name and also give the reason for the valency?
3X6 => Here subscript 3 represents its atomic number and superscript 6 denotes its mass number. Atomic number of element X = 3 Electronic configuration 2, 1. Element X has single electron in...
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What are the maximum number of electrons that can be accommodated in outermost shell of an atom?
Elements has tendency to react in such a manner that each atom has 8 electrons in its outermost shell, acquiring the similar electronic configuration as an inert gas. So maximum...
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Which element has a total of three shells, with four electrons in its valence shell?
Two shells, both of which are completely filled with electrons? Answer: Ne (Neon) The electronic configuration 2, 8, 2? Answer: Mg (Magnesium) A total of three shells, with four electrons in its valence shell? Answer: Si (Silicon) (14):...
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An atom of nitrogen has _______ electrons in its L shell. (A) three (B) four (C) five (D) six
The correct answer is (C) five
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It is because of inability of ns^2 electrons of the valence shell to participate in bonding that :
(4) Inertness of ns2 electrons of the valence shell to participate in bonding on moving down the group in heavier p-block elements is called inert pair effect. As a result, Pb(II)...
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Noble gases do not react with other elements because (a) they have completely filled valence shell (ns^2np^6)
(a) they have completely filled valence shell (ns2np6)
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As compared to 12C atom, 14C atom has (a) two extra protons and two extra electrons
(c) two extra neutrons and no extra electron
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