Valency of sodium (atomic number 11) is
A1
B2
C3
D0
Answer & Solution
Correct answer: A. 1
1. Sodium has electron arrangement 2, 8, 1.
2. It loses one outer electron to attain a stable octet.
3. The combining capacity, called valency, equals 1.
4. So option A is correct.
_Source: Selina Concise Chemistry Class 8, Ch on Structure of Atom (Mistral OCR'd PDF), section on valency_
Related questions
Besides VSEPR and the Kossel Lewis approach, which two theories are listed?Which theory is abbreviated VSEPR?Why can lattice enthalpy not be calculated directly from attraction and repulsion alone?Ionic bonds form most easily between elements with low ionization enthalpies and high negaWhat is the lattice enthalpy of sodium chloride?Lattice enthalpy is the energy required to separate one mole of an ionic solid into:The structures contributing to a resonance hybrid are called:Why was the concept of resonance introduced?