Types of Bonds can be predicted by calculating the difference in electronegativity.
If, Electronegativity difference is,
Less than 0.4 then it is Non Polar Covalent
Between 0.4 and 1.7 then it is Polar Covalent
Greater than 1.7 then it is Ionic
For Be and F,
E.N of Fluorine = 3.98
E.N of Beryllium = 1.57
________
E.N Difference 2.41 (Ionic Bond)
For H and Cl,
E.N of Chorine = 3.16
E.N of Hydrogen = 2.20
________
E.N Difference 0.96 (Polar Covalent Bond)
For Na and O,
E.N of Oxygen = 3.44
E.N of Sodium = 0.93
________
E.N Difference 2.51 (Ionic Bond)
For F and F,
E.N of Fluorine = 3.98
E.N of Fluorine = 3.98
________
E.N Difference 0.00 (Non-Polar Covalent Bond)
Result:
A polar covalent bond is formed between Hydrogen and Chlorine atoms.
Answer:
false
Explanation:
In overall, the size of the mineral crystal depends on how fast a solution cools down. More time that is spent during cooling creates larger crystals because of the free movement of the constituent of mineral isotopes in a somewhat liquid solution.
Answer:cools
Explanation:
Answer:
17.5 litres removed and 17.5 litres of pure antifreeze added
Explanation:
Let k equal the amount of the solution to be removed
amount of antifreeze to be added
0.2(70 - x) + x = 0.4(70)
14 - 0.2x +x = 28
0.8x = 28 -14
x = 14/0.8 = 17.5
x = 17.5 litres removed and 17.5 litres of pure antifreeze added
Answer: The number of moles of 0.50 g Aluminium is 0.0185 moles.
Explanation:
To calculate the number of moles, we use the formula:
In the given question:
Given mass of Aluminium = 0.50 g
Molar mass of Aluminium = 27 g/mol
Putting values in above equation, we get:
Hence, the number of moles of 0.50 g of Aluminium is 0.0185 moles.