Question

How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g ? [Atomic masses : Na = 23, Cl = 35.5]
(a) 5.14 × 10²¹ unit cells
(b) 1.28 × 10²¹ unit cells
(c) 1.71 × 10²¹ unit cells
(d) 2.57 × 10²¹ unit cells

Answer 1

$<b>$
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How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g ? [Atomic masses : Na = 23, Cl = 35.5]
(a) 5.14 × 10²¹ unit cells
(b) 1.28 × 10²¹ unit cells
(c) 1.71 × 10²¹ unit cells
(d) 2.57 × 10²¹ unit cells

→ [B]


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Answer 2

Answer :

How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g ? [Atomic masses : Na = 23, Cl = 35.5]

(a) 5.14 × 10²¹ unit cells  

(b) 1.28 × 10²¹ unit cells

(c) 1.71 × 10²¹ unit cells  

(d) 2.57 × 10²¹ unit cells

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The correct option is (b):  1.28 × 10²¹ unit cells

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