State the general outer electronic configuration of s-block and p-block elements.
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The general electron configuration of s – block elements are
Correct option is C) ns1 to ns2
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The general electron configuration of p – block elements are
D) ns2 np1 to ns2 np6
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Write condensed orbital notation of electronic configuration of the following elements : i. Fluorine (Z = 9) ii. Scandium (Z = 21)
No. Element Condensed orbital notation i. Fluorine (Z = 9) [He] 2s22p5 ii. Scandium (Z = 21) [Ar] 4s23d1 iii. Cobalt (Z = 27) [Ar] 4s23d7 iv. Zinc (Z = 30) [Ar] 4s2 3d10
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The ground state electronic configuration for chromium atom (Z = 24) is …………
Correct Option is : (A) [Ar] \(3d^54s^1\) Tge ground state electronic configuration of Cr is \(1s^2 \ 2s^2 \ 2p^6\) \(3s^2 \ 3p^6 \ 4s^1 \ 3d^5\) or [Ar] \(3d^54s^1\)
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State the relationship between the modern periodic table and electronic configuration in periods.
The modem periodic table is based on the atomic numbers of the elements. When elements are arranged in an increasing order of atomic number (Z), periodicity is observed in their...
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What is the general outer electronic configuration of d-block and f-block elements?
The general outer electronic configuration of the d-block elements is ns0-2 (n-1)d1-10 while the general outer electronic configuration of the f-block elements is ns2 (n-1)d0-1 (n-2)f1-14.
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i. Write the observed outer electronic configuration of Eu. ii. What is the reason for this variation in electronic configuration?
i. Observed outer electronic configuration of europium (Eu) is 6s2 4f7 5d0. ii. In the observed electronic configuration of Eu, 4f subshell is half-filled which is a highly stable configuration. Therefore, observed electronic configuration...
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Outer electronic configurations of a few elements are given below. Explain them and identify the period, group and block in the periodic
i. 2He: 1s2 Here, n = 1. Therefore, 2He belongs to the 1st period. The shell n = 1 has only one subshell, namely 1s. The outer electronic configuration 1s2 of ‘He’ corresponds to the...
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Complete the following table. Group 1 elements Outer electronic configuration: ……………….
Group 1 elements Group 2 elements Alkali metals Alkaline earth metals Outer electronic configuration: ns1. Outer electronic configuration: ns2 Monovalent positive ions Divalent positive ions
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