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Ions

An ion is pro...

Question

An ion is produced as a result of gain or loss of electrons by an atom. In $A u^{3 +}$ ion, 3 electrons are ___________by $A u$ atom.

A

gained

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B

lost

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C

shared

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D

None of the above

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Solution

The correct option is A lost
$A u$ looses 3 electrons to form the cation $A u^{3 +}$ .

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Q. Fill in the following blanks with suitable words:
(a) The particle which is formed by the gain of electrons by an atom is called ___.
(b) The particle which is formed by the loss of electrons by an atom is called ___.
(c) The particle which is formed by the loss or gain of electrons by an atom is called ___.
(d) A potassium ion has positive charge because it contains less ___ than ___.
(e) A sulphide ion has negative charge because it contains less ___ than ___.

Q. Fill in the following blanks with suitable words :
(a) The particle which is formed by gain of electrons by an atom is called ...................
(b) The particle which is formed by the loss of electrons by an atom is called ...................
(c) The particle which is formed by the loss or gain of electrons by an atom is called .....................
(d) A potassium ion has positive charge because it contains less .................... than ...................
(e) A sulphide ion has negative charge because it contains less ....................... than ...................

Q. Identify the correct statements out of the following:

a. Reduction is the loss of electrons by an atom or ion.
b. Oxidation is the gain of electrons by an atom or ion.
c. Oxidation is the loss of electrons by an atom or ion.
d. Oxidation and reduction always occur simultaneously.

Q. Name the following:
i) The ion formed by the loss of an electron from its neutral atom
ii) The ion formed by the gain of an electron from its neutral atom
iii) An element that loses an electron to form cation

iv) An element that gains an electron to form an anion
v) Ion(s) involved in the formation of ionic compounds.

Q. The loss or gain of electron leaves a complete highest energy level, so the electronic structure of an ion is the same as that of a :

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