Answer: Metallic Bonding: The Electron Sea ModelPositive atomic nuclei surrounded by a sea of delocalized electrons (the blue dots).
Explanation:
Answer:
true
Explanation:
There are two electrons (in the 1s orbital) on both carbon and fluorine “shielding” the outer electrons from the full force of the nucleus and due to both atoms being approximately the same size (both period two) then it is this shielding effect and proton difference that is causing the electronegativity difference
Answer:
1.59x10⁻¹⁰m
Explanation:
To solve this question we must know that the length of the cubic cell, X, is equal to:
X = √8 * R
<em>Where R is the atomic radius of germanium</em>
And that in 1 unit cell there are 4 atoms of germanium.
To solve this question we must find the mass in 1 unit cell, with this mass we can find the volume of the cube and the length. With the length we can know the atomic radius:
<em>Mass in 1 unit cell -Molar mass Ge = 72.64g/mol:</em>
4 atoms Ge * (1mol / 6.022x10²³ atoms) = 6.64x10⁻²⁴ moles Ge
6.64x10⁻²⁴ moles Ge * (72.64g / mol) = 4.825x10⁻²²g Ge
<em>Volume unit cell:</em>
4.825x10⁻²²g Ge * (1cm³ / 5.32g) = 9.07x10⁻²³cm³
<em>Length unit cell:</em>
∛9.07x10⁻²³cm³ = 4.49x10⁻⁸cm * (1m / 100cm) = 4.49x10⁻¹⁰m
<em>Atomic radius Ge:</em>
4.49x10⁻¹⁰m / √8 =
<h3>1.59x10⁻¹⁰m</h3>
Answer:
well im sorry to say this but good luck >:}
Explanation: