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Preparation of Dioxygen

The correct s...

Question

The correct set of four quantum numbers for the valence electron of sodium atom is

सोडियम परमाणु के संयोजी इलेक्ट्रॉन के लिए चारों क्वाण्टम संख्याओं का सही समुच्चय है

n $ℓ$ m_l m_s

(1) 4 0 0 $+ \frac{1}{2}$

(2) 3 1 –1 $+ \frac{1}{2}$

(3) 2 1 +1 $+ \frac{1}{2}$

(4) 3 0 0 $+ \frac{1}{2}$

(1)

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(2)

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(3)

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(4)

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Solution

The correct option is D (4)
Solution

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a_{n}

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S_{n} = \frac{1}{a_{1} + 1} + \frac{1}{a_{2} + 1} + . . . . . . . . . . . + \frac{1}{a_{n} + 1}

[S_{2012}]

For waht value of $λ$ , the three numbers $2 λ - 1, \frac{1}{4}, λ - \frac{1}{2}$ can be the direction cosines of a straight line?

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Δ = 0

Δ

$l o g_{e} (n + 1) - l o g_{e} (n - 1) = 4 a [(\frac{1}{n}) + (\frac{1}{3 n^{3}}) + (\frac{1}{5 n^{5}}) + . . . \infty]$ Find $8 a$ .

Δ A B C

r_{1}, r_{2}, r_{3}

H . P

\frac{r_{2}}{r} = \frac{1}{3}

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