Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain with reason why carbon compounds are generally poor conductors of electricity.
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Name (a) three elements that have a single electron in their outermost shells. (b) two elements that have two electrons in their outermost shells.
(a) Lithium (Li), sodium (Na), and potassium (K) have a single electron in their outermost shells. (b) Magnesium (Mg) and calcium (Ca) have two electrons in their outermost shells. (c) Neon (Ne),...
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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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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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Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing
Carbon has 4 electrons in its outermost shell. It cannot lose 4 electrons to form C4+ cation because very high energy is required to remove 4 electrons leaving behind a...
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Atoms of eight elements A, B, C, D, E, F, G and H have the same number of electronic shells but different number of electrons
(i) Third period Group-1 ,2,13,14, 15, 16, 17, 18 respectively. (ii) Nature of compound: Electrovalent/ionic (iii) Metals-A and B; Non-metals-E, F, G (iv) G/H (v) CG3 (vi) H (vii) A (viii) D
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Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells.
Carbon has 4 electrons in its outermost shell. It cannot lose 4 electrons to form C4+ cation because very high energy is required to remove 4 electrons leaving behind a...
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Gradual addition of electronic shells in the noble gases causes a decrease in their (a) ionisation energy
(a) Ionisation energy decreases as we move away from nucleus due to less electrostatic attraction between electrons and nucleus
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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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With reference to ionic compounds, consider the following statements: 1. Ionic compounds are insoluble in alcohol.
(a) Ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. Following the aphorism, "like dissolves like", ionic compounds dissolve in...
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Boron forms :- (a)Covalent compounds only (b)Ionic compounds only (c)Ionic as well as covalent compounds
(a) Covalent compounds only
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