GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When an atom loses electrons it becomes
A
a positive ion
B
a negative ion
C
both positive and negative ion
D
a neutral ion
Explanation: 

Detailed explanation-1: -Therefore, an atom that loses electrons becomes a positively-charged ion called a cation.

Detailed explanation-2: -When an atom loses or gains an electron, ions are formed. If an atom loses electron it forms positive charge and if gains electron it forms negative charge. An atom which carries charge on it is known as ion.

Detailed explanation-3: -Forming positive ions Metal atoms lose electrons from their outer shell when they form ions: the ions formed are positive, because they have more protons than electrons. the ions formed have full outer shells. for elements in groups 1, 2 and 3, the number of electrons lost is the same as the group number.

Detailed explanation-4: -Neutral atoms can be turned into positively charged ions by removing one or more electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. By removing an electron from this atom we get a positively charged Na+ ion that has a net charge of +1.

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