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Question:

An Aluminium (Z13) atom substitutes for one of the silicon.?

An Aluminium (Z13) atom substitutes for one of the silicon (Z14) atoms in a crystalline block of siliconExplain how its bonding into the lattice gives rise to a 'hole'.

Answer:

Stromboli get the croisant rolls put cheese and pepperonis on it roll it up and make it into a circleput some egg yolk on it and then bake it its yummy
pancakesRecipe Serve these pancakes with butter and syrupINGREDIENTS: 2 cups all-purpose flour, stirred or sifted before measuring 2 1/2 teaspoons baking powder 1/2 teaspoon salt 1 egg, slightly beaten 1 1/2 cups milk 2 tablespoons melted butter PREPARATION: Sift together flour, baking powder, and saltIn a separate bowl, combine egg and milk; add to flour mixture, stirring only until smoothBlend in melted butterCook on a hot, greased griddle, using about 1/4 cup of batter for each pancakeCook until brown on one side and around edge; turn and brown the other sideRecipe for pancakes serves 4
Valance electron( no.of electrons in the outer shell) of Al atom is 3 (it belongs to boron group) n for that Si atom is 4.When an Al atom substitutes for Si atom, valance electrons of Al atom makes covalent bond with neighboring Si atomsbut one electron can't make covalent bondthus a hole is created
spaghetti and meatballs-get the prego with italian sausage, it is excellent, and an absolute piece of cake to cook.

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