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iscms/mod/ibis/view.php?id 3204188 3/z/2017 11:55 PM S 14/3 t Print Icalculator

ID: 502144 • Letter: I

Question

iscms/mod/ibis/view.php?id 3204188 3/z/2017 11:55 PM S 14/3 t Print Icalculator Periodic Table uestion 6 of 11 Sapling Learning In some chemical reactions electrons are transferred from one substance to another, but there is no net gain or loss of electrons during the reaction. They involve the oddation of one substance, losing electron(s) and the reduction of another, gaining electron(s) and are called "redao reactons. In neutral atoms, such as A and X, the number of protons equals the number of electrons. When atom A loses an electron, the positive charge of the nucleus is now greater than the negative charge of the electrons and the resulting ion has a net positive charge, forming a cation. In a reaction, the electron must be taken up by another atom,X, which results more electrons than protons and a net negative charge on the atom, forming an anion. Mnemonic devices can help to remember the definitions of oxidation and reduction: LEO (L says GER (Gaining Eiectrans Reduction) aron (oxddation Losing) RG Reduction Gaining). identify the equations that show the oxidation of neutral atom A and the reduction of neutral atom X, oxidation of A reduction of x N e Previous Check Answer O Next SExi about careers partners privacy popcy terms of use contact us

Explanation / Answer

A:-    A   ----------> A^+ + e^-   => Neutral atom,A lose one electron and form A^+ cation, so it is oxidation reaction

Neutral atom          cation       electron

    e^-    +    X    -------->    X^-   => Neutral atom,X gain one electron and form X^- anion, so it is reduction reaction

electron   Neutral atom        anion