Answer:
Lead
Explanation:
While taking sample from flint's distillery, theybfoind 13000 ppb or parts per billion lead in the water itself
Answer:
6.63 M
Explanation:
NaCl(s) ---> Na^+(aq) + Cl^-(aq)
Given that [Na^+] = [Cl^-] = s
Where s= concentration of the both ions
Ksp = s^2
s= √Ksp
s= √43.9
s= 6.63 M
Atomic number
26
Atomic mass
55.85 g.mol<span> -1</span>
Electronegativity according to Pauling
1.8
Density
7.8 g.cm-3 at 20°C
Melting point
1536 °C
Boiling point
2861 °C
<span>Vanderwaalsradius </span>
0.126 nm
Ionic radius
0.076 nm (+2) ; 0.064 nm (+3)
Isotopes
8
<span>Electronic shell </span>
[ Ar ] 3d6 4s2
Energy of first ionisation
761 kJ.mol<span> -1</span>
Energy of second ionisation
1556.5 kJ.mol<span> -1</span>
Energy of third ionisation
2951 kJ.mol<span> -1</span>
Standard potential
- o.44 V (Fe2+/ Fe ) ; 0.77 V ( Fe3+/ Fe2+ )
Discovered by
The ancients
<span>
Read more: <span>http://www.lenntech.com/periodic/elements/fe.htm#ixzz4a5WaFZtx</span></span>
C in both anabolism and catabolism
