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10Valence electrons are the electrons present in the outermost shell of an atom.
Valency is the number of protons in an atom.
Electrons in the valence shell can be shared or exchanged during chemical reactions.
Sodium has valency 1 and is more reactive than magnesium which has valency 2.
Helium has 2 valence electrons but valency 0.
Iron has a fixed valency of 2 only.
Copper can have valency 1 or 2 depending on the reaction.
Every atom is electrically neutral because the number of protons equals the number of electrons.
Ions are atoms that gain or lose protons.
Elements with high valency are more reactive than elements with low valency.
Percentage: 0%
Which of the following atom has valency 3? a. Oxygen b. Aluminium c. Calcium d. Chlorine
Valence electrons are located in which shell?
Valency of an atom depends on:
Which element has valency 0?
Sodium (Na) is more reactive than Magnesium (Mg) because:
Copper can show variable valency:
Atoms become ions when they:
Chlorine has valence electrons:
The valency of oxygen is:
Which atom has 2 valence electrons?
Electrons present in the outermost shell are called ______ electrons.
The combining capacity of an atom is called its ______.
Sodium has valency ______.
Magnesium has valency ______.
Iron can have valency ______ and 3.
Copper can have valency ______ and 2.
Helium has ______ electrons and valency 0.
Chlorine has ______ valence electrons.
Atoms that gain or lose electrons become ______.
Potassium has valency ______.