If the valence shell electronic configuration is ns2 np5, the element will belong to :
a. alkali metals
b. halogens
c. alkaline earth metals
d. actinides
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The ground state electronic configuration of valence shell electrons in nitrogen molecule `(N_2)` is written as `KK, sigma2 s^2 , sigma^(***)2s^2, sig
Correct Answer - D The MO configuration of `N_2` is KK, `sigma2s^2, .^*** sigma2s^2, sigma2p_x^2 , pi2p_y^2~~pi2p_z^2` Bond order of `N_2=1/2[N_b-N_a]=1/2[8-2]=6/2=3`
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Valence Shell Electron Pair repulsion (VSEPR) theory is used to predict which of the following :
Option : b. the shapes of molecules and ions.
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What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.
Electrons present in the outermost shell of the atom of an element are called valence electrons. 3Li is an s-block element and its electronic configuration is 1s22s1. Since it has one...
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If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?
The element having valence shell electronic configuration 3s2 3p1 must be placed in the p - block of the periodic table as its last electron enters in p-subshell (3p).
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In the long form of the periodic table, ________ group elements can release maximum amount of energy by the addition of electron into is valence shell
Correct Answer - VII
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If an element has 3 electrons in the M-shell then the element is …………………
Correct option is B) Al
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If number of electrons in M-shell is half of K-shell then atomic number and name of element.
B) 11, Sodium
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l = 0 — i) d – sub shell , 1 = 1 — ii) s – sub shell , 7 = 2 — iii) f – sub shell
C) a → ii, b → iv, c → i, d → iii
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valence of group IA — i) 4 , valence of group IVA — ii) 0
D) a → iii, b → i, c → iv, d → ii
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The element with negative charge having the electronic configuration 2,8, 8 is
Correct option is C) S2-
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