MHT-CET

Structure of Atom question bank (Chemistry)

Practice 138 free MHT-CET Chemistry - Structure of Atom questions with answers and step-by-step solutions.

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Q1.

How many total number of s and p electrons are respectively present in $\text{Cl}^-$ ?

(A)
$6$ and $11$
(B)
$6$ and $12$
(C)
$2$ and $7$
(D)
$11$ and $6$
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Q2.

Calculate the de-Broglie wavelength of an electron having velocity $1000\ \text{ms}^{-1}$ [$h = 6.626 \times 10^{-34}\ \text{js}$, mass of an electron $= 9.1 \times 10^{-31}\ \text{kg}$]

(A)
$7.28 \times 10^{-7}\ \text{m}$
(B)
$6.68 \times 10^{-7}\ \text{m}$
(C)
$7.76 \times 10^{-7}\ \text{m}$
(D)
$7.45 \times 10^{-7}\ \text{m}$
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