॥ Bhagavad Gita · 4.38 ॥

न हि ज्ञानेन सदृशं पवित्रमिह विद्यते।

“In this world, nothing purifies as knowledge does.”

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GOC · Class 1102:47

Which carbocation is the most stable?

ACH₃⁺ — Methyl
BCH₃CH₂⁺ — Primary
C(CH₃)₂CH⁺ — Secondary
D(CH₃)₃C⁺ — Tertiary

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Why does N have a higher first ionisation energy than O, even though oxygen has the greater atomic number?

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Pendulum · Conservation of Energy

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1H
2He
3Li
4Be
5B
6C
7N
8O
9F
10Ne
11Na
12Mg
13Al
14Si
15P
16S
17Cl
18Ar
19K
20Ca
31Ga
32Ge
33As
34Se
35Br
36Kr
21Sc
22Ti
23V
24Cr
25Mn
26Fe
27Co
28Ni
29Cu
30Zn
37Rb
38Sr
55Cs
56Ba
39Y
40Zr
41Nb
42Mo
43Tc
44Ru
45Rh
46Pd
47Ag
48Cd
72Hf
74W
78Pt
79Au
80Hg
57La
58Ce
59Pr
60Nd
61Pm
62Sm
63Eu
64Gd
65Tb
66Dy
67Ho
68Er
69Tm
70Yb
71Lu
89Ac
90Th
91Pa
92U
93Np
94Pu
95Am
96Cm
97Bk
98Cf
99Es
100Fm
101Md
102No
103Lr
87Fr
88Ra

Na

Sodium

Alkali Metal

[Ne]3s¹

11

22.990 u

s-block

Second alkali metal — persistent yellow flame color (D-line emission at 589 nm), most abundant alkali metal in nature

IE

496

kJ/mol

EN

0.93

Pauling

Radius

186

pm

⚡ Oxidation States

+1
Na₂ONa₂O₂NaOHNaClNa₂CO₃NaHCO₃NaNO₃

Oxides Formed

Na₂ONa₂O₂

Na₂O is strongly basic, reacts vigorously with water → NaOH

Key Reactions

2Na + O₂ → Na₂O₂

Conditions: Excess oxygen

Forms peroxide (unlike Li which forms normal oxide)

2Na + 2H₂O → 2NaOH + H₂↑

Conditions: Vigorous reaction

Reacts vigorously with cold water

Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂↑

Conditions: Room temperature

Stable carbonate (does not decompose on heating unlike Li₂CO₃)

2NaHCO₃ → Na₂CO₃ + H₂O + CO₂

Conditions: Heat

Bicarbonate decomposes on heating

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Ion

Na⁺

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Science · Class 9

Structure of the Atom

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How many electrons in Carbon's outermost shell?

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6
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॥ The Canvas Philosophy ॥

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मननम्

Mananam

To Question, Deeply

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निदिध्यासनम्

Nididhyasanam

To Internalize, Completely

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