Chemistry
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New answer posted
9 months agoContributor-Level 10
37Rb = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s1
Last electron enters in 5s subshell
Value of quantum numbers
n = 5, l = 0, m = 0, s =
New answer posted
9 months agoBeginner-Level 5
NCERT offers the foundation for every class 12 student. CBSE board exam questions are primarily based on the NCERT exercise, Examples and conceptual explanation.
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New answer posted
9 months agoContributor-Level 10
After balancing change in oxidation state,
2Cl2 2Cl– + 2ClO–
Next, balance 'O' atoms,
2Cl2 +4OH–
Simplifying to get the simplest ratios,
Cl2 +2OH–
x = 1, y = 2, z = 1, p = 1
New answer posted
9 months agoContributor-Level 10
K2Cr2O7 + H2O2 + H2SO4->
Oxidation state of chromium = +6.
New answer posted
9 months agoContributor-Level 10
A. Vitamin B12– Co
B. Wilkinson catalyst –Rh ( [Rh (PPh3)3Cl])
C. Ziegler-Natta catalyst –Ti (TiCl4 +Al (C2H5)3)
D. Haemoglobin – Fe
New answer posted
9 months agoContributor-Level 10
Ionisation enthalpy increases in a period. Z dominates over screening effect (s) in a period as Zeff. increases.
New answer posted
9 months agoContributor-Level 10
Proteins on hydrolysis gives α-amino acid because α-amino acids are building block of proteins. It is also fact that amino acids contain both –NH2 and –COOH group.
New answer posted
9 months agoContributor-Level 10
Electronegativity generally decreases as we move down the group but Pb has higher electronegativity than Sn.
C non-metal
Si and Ge->metalloids
Sn and Pb->metals
E.N. of Sn 1.8, Pb = 1.9
New answer posted
9 months agoBeginner-Level 5
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