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Syedsalman
Subject: Chemistry
, asked on 24/5/17
electron affinity of Be, Mg, N are almost zero explain
Answer
2
Syedsalman
Subject: Chemistry
, asked on 24/5/17
which out of Cl and Cl- has higher electron affinity
Answer
2
Syedsalman
Subject: Chemistry
, asked on 24/5/17
which among the following has the smallest radii Li+,K+, Ba2+, Be2+
Answer
1
Aahan Bhargava
Subject: Chemistry
, asked on 21/5/17
We know that origin of life is explain with chemistry but we do not have any nobel price in chemistry ? Why new invention or discovery comes under bio and physics not in chemistry?
Answer
0
Noel George Cherian
Subject: Chemistry
, asked on 20/5/17
An atom of an element has 7 electrons in 4d subshell. Write its electronic configuration and predict the group and period of the element.
Answer
1
Noel George Cherian
Subject: Chemistry
, asked on 18/5/17
If scientists succeed in obtaining elements with atomic number 116 and 117, which group and period will assign for it?
Answer
1
Tarunvir Singh
Subject: Chemistry
, asked on 16/5/17
Arrange the elements A,B,C,D,E in increasing order of their ionisation energy
Answer
1
Alok Singh
Subject: Chemistry
, asked on 28/4/17
Solve this
Are the oxidation state and covalency of Al in [AlCl(H
2
O)
3
]
2+
same . Give reasons also for the answer with explanation of how to find the oxidation state and covalency of an element in a compound.
Answer
1
Ayush Sharma
Subject: Chemistry
, asked on 31/3/17
Ques.20
Answer
1
Ayush Sharma
Subject: Chemistry
, asked on 31/3/17
Ques.20
Answer
1
Ayush Sharma
Subject: Chemistry
, asked on 31/3/17
Electronic configuration of 1) Mn2+ (25) 2) Zn2+ (30).
Answer
1
Aryan
Subject: Chemistry
, asked on 15/3/17
why elements in s and p block section in preodic table are called representative elements
Answer
2
Aryan
Subject: Chemistry
, asked on 15/3/17
why elements in d block section in preodic table are called transition elements
Answer
1
Deepshika Subramani
Subject: Chemistry
, asked on 25/2/17
down the group as the number of shells increase wont the effective nuclear charge increase because there would be more shielding effect in the atom ?
Answer
5
Deepshika Subramani
Subject: Chemistry
, asked on 25/2/17
pls explain how iso electronic species are arranged in increasing order of atomic size.pls explain with an Example i got to know that the reason is increasing amount of protons but across a period when the amount of protons increase nuclear charge increases how do we relate that to atomic size
and it is said that atomic size is inversely proportionate to effective nuclear charge so across a period when the effective nuclear charge increases?
Answer
2
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What are you looking for?
Are the oxidation state and covalency of Al in [AlCl(H2O)3]2+ same . Give reasons also for the answer with explanation of how to find the oxidation state and covalency of an element in a compound.
and it is said that atomic size is inversely proportionate to effective nuclear charge so across a period when the effective nuclear charge increases?