Chemistry
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New answer posted
10 months agoContributor-Level 10
Hydrogen peroxide has open book type structure. It is coloureless in free state
New answer posted
10 months agoContributor-Level 10
Zone refining is used to obtain high purity elements which are used in the manufacture of semiconductors. Boron and silicon both are used in semiconductors.
New answer posted
10 months ago
Contributor-Level 10
lnK = -E_a/RT + I
-E_a/R = slope is negative
⇒ -E_a/R = (10-0)/ (5-0)
E_a = 2R
New answer posted
10 months agoNew answer posted
10 months agoContributor-Level 10
Hess's law
ΔH_solution = ΔH_lattice + ΔH_hydration
4 = 788 + ΔH_hydration
ΔH_hydration = -784 kJ mol? ¹
New answer posted
10 months agoContributor-Level 10
In isoelectronic species nuclear charge can be approximated as
Nuclear charge ≈ z / no. of electrons
Al³? Mg²? Na? F? O²? N³?
Nuclear Charge: 13/10 12/10 11/10 9/10 8/10 7/10
Minimum nuclear charge is in N³? and maximum is in Al³?
So order should be
Al³? < Mg? < Na? < F? < O? < N?
New answer posted
10 months agoContributor-Level 10
Using VSEPR, L.P - B.P repulsion we can safely say that CH? should have the highest bond angle among the given
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