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Shobikaa asked a question
Subject: Chemistry, asked on on 15/6/16
Which of the following pairs has almost same atomic radii? a) Aluminium and Gallium b) Beryllium and Magnesium c) Magnesium and Aluminium d) Boron and Beryllium .   Experts , Please give appropriate explanation to the answer with example and without providing any link.
Jhalak Sharma asked a question
Subject: Chemistry, asked on on 8/6/16
The elements Z = 117 and 120 have not yet been discovered. In which family / group you place these elements and also give the electronic configuration in each case.
Pianist asked a question
Subject: Chemistry, asked on on 17/7/17
Ionizaion potential of Na would numerically be same as the
1) electron affinity of Na+
2) electronegativity of Na+
3) electron affinity of  Ne
4) ionisation potential of Mg
Shobikaa asked a question
Subject: Chemistry, asked on on 15/6/16
 The correct orders of increasing acidic strengths is   a) CH4 < NH3 < H2O <  HF                                                                                                                                                                               
                b)CH4 < H2O < NH3 < HF                                                                                                                                                                              
                c)HF < H2O < CH4 < NH3                                                                                                                                                                                   
                d) HF < CH4 < NH3 < H2O          Experts , Please give explanation to the answer with example and without providing any link.    
Tanishka Gupta asked a question
Subject: Chemistry, asked on on 2/7/17
Zeff effective of potassium?
Pianist asked a question
Subject: Chemistry, asked on on 22/7/17
state all the exceptions to the general trend of atomic radius with reasons.
Haripriya asked a question
Subject: Chemistry, asked on on 11/6/16
explain enthalpy of hydration in brief.
Pianist asked a question
Subject: Chemistry, asked on on 17/7/17
The first four ionisation energy values of an element are 191, 578, 872 and 5962 Kcal. The number of valence electrons in the element is
a) 1
b) 2
c) 3
d) 4
 
State full explanation.
Krishna Vamsi asked a question
Subject: Chemistry, asked on on 30/5/16
what weight of calcium contains the same number of atoms as those in a 3 g of carbon?
Pianist asked a question
Subject: Chemistry, asked on on 20/7/17
Give all the exceptions of the periodic table for NEET based on the chapter Classification of Elements and Periodicity
Vyshakh Varrier asked a question
Subject: Chemistry, asked on on 18/6/16
What will be the correct order of sizes of C,NP,S? Shoud we solve by using the concept of shielding effect?
Mrinmayee Bhole asked a question
Subject: Chemistry, asked on on 23/7/16
How to get the idea to identify correct order for E.A,atomic radii,I.P ,E.N,? And what else can be done to good in periodic table?
Vaishnavi asked a question
Subject: Chemistry, asked on on 2/7/17
no. of electrons of sodium with n+l value 3 are....
Pianist asked a question
Subject: Chemistry, asked on on 22/7/17
State all the exceptions to the general trend of screening effect with reasons.
Pianist asked a question
Subject: Chemistry, asked on on 16/7/17
Why is it impossible to measure the exact atomic radius? If it is really impossible, then on what basis we give atomic radii of different atoms?
Jaison asked a question
Subject: Chemistry, asked on on 22/7/16
while moving left to right in a period the no. of protons increase and also while moving top to bottom then how ionisation energy varies in both scenario?
Arnav Samanta asked a question
Subject: Chemistry, asked on on 10/7/17
why the lanthinoids and actinoides does not have 1 e- in thier f subshell as after filling of the 2e- in the s subshells they should have 1e- in the f subshell and the f block series should start from them but it do not starts tell the reason why this happens and also tell me the reason behind anamalous configuration of these 2 elements
Hemant asked a question
Subject: Chemistry, asked on on 12/9/16
Please explain this question.
Pianist asked a question
Subject: Chemistry, asked on on 22/7/17
State all the exceptions to the general trend of electron gain enthalpy with reasons.
Krishna Vamsi asked a question
Subject: Chemistry, asked on on 30/5/16
culculate  the number of carbon atoms  present in 24 grams of methane?
Akansha asked a question
Subject: Chemistry, asked on on 29/12/16
suppose in aluminium ,if we try take out all the electrons in the outer shell to make the elenent achieve its elctronic configuration ...then what will be the ionisation enthalpy os 3 electrons...greater
Hemant asked a question
Subject: Chemistry, asked on on 7/9/16
Experts please solve Q34.
Bhavya Arora asked a question
Subject: Chemistry, asked on on 8/9/17
Who made periodic table for the first time? Who observed periodicity first between elements?
Pianist asked a question
Subject: Chemistry, asked on on 22/7/17
State all the exceptions to the general trend of Ionization enthalpy with reasons.
Pianist asked a question
Subject: Chemistry, asked on on 22/7/17
State all the exceptions to the general trend of metallic and non metallic character with reasons.
Vaishnavi asked a question
Subject: Chemistry, asked on on 2/7/17
which of the following ion has same no ofelctrons in its outermost and penultimate shell..zn+2,sulphide ion,magnesium ion , tri +ve cobalt ion
Saatvik Agrawal asked a question
Subject: Chemistry, asked on on 1/6/19
Why is hydrogen placed above alkali metals?
Srikanth asked a question
Subject: Chemistry, asked on on 15/6/16
mam advance happy birthday i was not able to tell u and had a nyc class bye maam take care
Annette Elsa asked a question
Subject: Chemistry, asked on on 26/9/16
Which has more smaller radius
br- or cl -
br- or cl2-
Surya Teja asked a question
Subject: Chemistry, asked on on 6/5/18
mam can you please say about habour's synthesis ?and role molebdenum in habours synthesis?
Aisha Zubair asked a question
Subject: Chemistry, asked on on 26/8/17
What imagery has the poet employed in the poem LORD ULLINS DAUGHTER?
Divyansh Saxena asked a question
Subject: Chemistry, asked on on 30/7/17
How to calculate valence electron from ionization energy?
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