Write the general outer electronic configuration of s-, p-, d- and f- block elements.
|
Element |
General outer electronic configuration |
|
s–block(alkali metals) |
ns1–2, where n = 2 – 7 |
|
p–block(metals & non metals) |
ns2np1–6, where n = 2 – 6 |
|
d–block(transition elements) |
(n–1) d1–10 ns0–2, where n = 4 – 7 |
|
f–block(inner transition elements) |
(n–2)f1–14(n–1)d0–10ns2, where n = 6 – 7 |
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Calculate the mass percent of different elements present in sodium sulphate (Na2SO4).
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In a reaction A + B2 → AB2 Identify the limiting reagent, if any, in the following reaction mixtures.
(i) 300 atoms of A + 200 molecules of B
(ii) 2 mol A + 3 mol B
(iii) 100 atoms of A + 100 molecules of B
(iv) 5 mol A + 2.5 mol B
(v) 2.5 mol A + 5 mol B
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- Q:-
Assign the position of the element having outer electronic configuration
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- Q:-
Isotope
Isotopic molar mass
Abundance
36Ar
35.96755 gmol–1
0.337%
38Ar
37.96272 gmol–1
0.063%
40Ar
39.9624 gmol–1
99.600%
Use the data given in the following table to calculate the molar mass of naturally occurring argon isotopes:
Isotope
Isotopic molar mass
Abundance
36Ar
35.96755 gmol–1
0.337%
38Ar
37.96272 gmol–1
0.063%
40Ar
39.9624 gmol–1
99.600%
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Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% dioxygen by mass.
10 Comment(s) on this Question
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Thanks a lot ....ðð
Configuration of d-block is correctly given according to NCERT Book. Pd has the configuration of [Kr]5s^(0) 4d^(10), which justifies the given configuration.
General electronic configuration for d block is WRONG. It should be (n-1)d(1-10)ns(1-2)
General configuration of D block element is wrong. It is (n -1)d^1-10ns^1-2. This right general configuration of D block element
Well nice But I have more interest in biology only(botany,zoology).But This answer is useful to me
Amazing!!!!
This is very useful to us...... Keep up this great workððð
Thnks for ur Help!
Thanks so much for this
- NCERT Chapter