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प्रश्न
Element A has 2 electrons in its M shell. Element B has atomic number 7.
Write equations to show how A and B form ions.
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उत्तर
\[\ce{A - 2e- -> A^2+}\] (cation)
\[\ce{B + 3e- -> B^3-}\] (anion)
संबंधित प्रश्न
What are covalent compounds?
State the type of bonding in the following molecule.
Water
Give one example of a molecule containing a double covalent bond
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
Explain the following:
Covalent compounds are generally gases or liquids or soft solids.
State the type of bond formed when the combining atom has small E.N. difference.
Explain the following:
Water is a polar covalent molecule.
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Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
