“No two electrons of same atom have same set of four quantum numbers”. This principle is known as ……………..
A) Hund’s principle
B) Aufbau principle
C) Pauli’s exclusion principle
D) Heisenberg uncertainty principle
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3. Suppose set \( A \) consists of first 250 natural numbers that are multiples of 3 and set \( B \) consists of first 200 even natural numbers. How many elements does \( A \cup B \) have? (a) 324 (b) 364 (c) 384 (d) 400
Given: n(A)=250 n(B)=200 A={3,6,9,12,.......750} B=2,4,6,8,10.......400} Therefore,A⋂B={6,12,18....396) =>n(A⋂B)=396/6=66 n(A∪B)=n(A)+n(B)-n(A⋂B) =250+200-66 ...
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Suggest a universal set for the set given below. A = {Even numbers less than 100} B={Odd natural numbers less than 100 in natural numbers }
Correct Answer - `mu = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12---------, 99}`
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Which of the following are examples of the null set ? (i) Set of odd numbers divisible by 2. (ii) Set of even prime numbers. (iii) `A={x:x in N,1 lt x
Correct Answer - (i),(iv),(v),(vi)
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The impossible set of quantum numbers for any electron of an atom is ……………………
B) a, b only
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An atom has two electrons in its 4s orbital. Write the values of the four quantum numbers for each of them.
For the 4s orbital, 4 stands for the principal quantum number n; s stands for the subshell s having the value of azimuthal quantum number, l = 0. In the ‘s’ subshell,...
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An orbital is designated by …………. quantum numbers while an electron in an atom is designated by …………. quantum numbers.
Option : (D) three, four An orbital is designated by three quantum number (n , l , m) while an electron in an atom is designated by four quantam number (n , l...
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An orbital is designated by …………. quantum numbers while an electron in an atom is designated by …………. quantum numbers.
2 Answers
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The two electrons have the following set of quantum numbers : P = 3, 2, -2,+(1/2) Q = 3, 0, 0, +(1/2) Which of the following statement is TRUE?
Option : (B) P has greater energy than Q
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For the electron present in 1 s orbital of helium atom, the correct set of values of quantum numbers is ………..
Correct Option is : (A) 1, 0, 0, +1/2 For 1s electron ofv helium atom n = 1 l = 0 (l = n-1 , n-2, ....... ,0) m = 0 ...
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