Home › CBSE Class 9 › chemistry › c9ionicformula › Per NCERT 'Threads of Curiosity' (§9.4.2), how i…
Per NCERT 'Threads of Curiosity' (§9.4.2), how is sodium chloride arranged in 3-D space?
ARandomly with no order
BAs long chains
CAs isolated NaCl molecules
DIn a regular, repeating CRYSTAL LATTICE — each Na⁺ is surrounded by 6 Cl⁻ and vice versa
Answer & Solution
Correct answer: D. In a regular, repeating CRYSTAL LATTICE — each Na⁺ is surrounded by 6 Cl⁻ and vice versa
Per NCERT §9.4.2, NaCl forms a 3-D crystal lattice with 6-fold coordination. Ionic compounds don't exist as isolated molecules.
Related questions
Per NCERT §9.6, which TYPE of compound generally has HIGH MELTING POINTS — because of the Per NCERT §9.5.2, how should the subscripts in an ionic compound formula be SIMPLIFIED?Per NCERT §9.5.1, the formula of carbon tetrachloride (covalent compound) obtained by crisPer NCERT §9.5.2, what is the CHEMICAL FORMULA for calcium chloride — using the cross-overPer NCERT, the cross-over method gives the formula of magnesium chloride as which?Per NCERT Table 9.1(a), what is the VALENCY of magnesium ion (Mg²⁺)?Per NCERT, the formula NH₄⁺ represents which kind of ion?Per NCERT, how is SODIUM CHLORIDE (NaCl) formed at the atomic level?