EASY
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An atom have 3 protons and 4 neutrons will have valency of

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Important Questions on Structure of The Atom

MEDIUM
Science>Chemistry>Structure of The Atom>Valency
The pair of valencies exhibited by tin(Sn) is
HARD
Science>Chemistry>Structure of The Atom>Valency
The formulae of an oxide of an element M is MO. The formulae of its phosphate is
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
Valence electron in Cl- ions is 
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
An element X with atomic number 13 combines with another element Y of atomic number 17. The formula of the compound formed and the nature of the bond will be:
EASY
Science>Chemistry>Structure of The Atom>Valency
 Define valency.
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Science>Chemistry>Structure of The Atom>Valency
What is the difference between the symbol of an element and the formula of a compound?
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
The valency of phosphate in Na3 PO4 is
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
Tabulate the difference between molecular formula and empirical formula.
EASY
Science>Chemistry>Structure of The Atom>Valency
Define valency.
HARD
Science>Chemistry>Structure of The Atom>Valency
Define valency by taking examples of silicon and oxygen. 
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Science>Chemistry>Structure of The Atom>Valency
The symbolic representation of the kind and actual number of atoms present in one molecule of a pure substance is called its:
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
Which amongst the following radicals have 1+  valency?
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Science>Chemistry>Structure of The Atom>Valency
The valency of phosphide in calcium phosphide (Ca3P2) is:
EASY
Science>Chemistry>Structure of The Atom>Valency
The number of hydrogen atoms, which combine directly or indirectly with one atom of an element, so as to form a chemical compound is:
MEDIUM
Science>Chemistry>Structure of The Atom>Valency
Which amongst the following has -1 valency?
EASY
Science>Chemistry>Structure of The Atom>Valency
Which amongst the following has +2 valency?
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Science>Chemistry>Structure of The Atom>Valency
Which amongst the following has 1+ valency?
EASY
Science>Chemistry>Structure of The Atom>Valency
Atomic number of potassium is 19, it has valence electrons:
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Science>Chemistry>Structure of The Atom>Valency
Which amongst the following has 3+ valency?
EASY
Science>Chemistry>Structure of The Atom>Valency
An element has 3 protons and 4 neutrons in its atom. Its valency is: