From 82bb4439952ca71166c298e3f29041c9368ed390 Mon Sep 17 00:00:00 2001
From: Kostas Vilkelis <kostasvilkelis@gmail.com>
Date: Thu, 19 Mar 2020 15:36:16 +0000
Subject: [PATCH] Update 9_crystal_structure_solutions.md
---
src/9_crystal_structure_solutions.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/9_crystal_structure_solutions.md b/src/9_crystal_structure_solutions.md
index eb17de4d..f931cc1d 100644
--- a/src/9_crystal_structure_solutions.md
+++ b/src/9_crystal_structure_solutions.md
@@ -100,9 +100,9 @@ $V = a^3$
??? hint "Visual hint"
- Consider the atom at (0.25,0.25,0.25) coordinates in the interactive diamond lattice image.
+ Consider the atom at (0.25,0.25,0.25) coordinates in the interactive diamond lattice image. Look at its neighbours.
-4 nearest neighbours: $(\frac{1}{4},\frac{1}{4},\frac{1}{4})$ and $(\frac{1}{4},\frac{1}{4},\frac{1}{4}) + \mathbf{a_i} $ where $i = 1,2,3$
+4 nearest neighbours: $-(\frac{1}{4},\frac{1}{4},\frac{1}{4})$ and $-(\frac{1}{4},\frac{1}{4},\frac{1}{4}) + \mathbf{a_i} $ where $i = 1,2,3$
### Subquestion 5
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