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An ion has 18 electrons in the outermost shell, it is:
(1) Cu+
(2) Th4+
(3) Cs+
(4) K+
Ans: Cu+
For principle quantum numbern= 4 the total number of orbitals having l=3: (1) 3 (2) 7 (3) 5 (4) 9 Ans: 7
How to know degree of superheat from psychometric chart?
write short note on vulcanization?
Nucleophilic addition reactions: While the addition reaction takes place on account of the initial attack of nucleophile, the reaction is known as a nucleophilic addition react
An example for trihydric phenols
A covalent bond is likely to be formed between two elements which: (1) Have similar electronegativities (2) Have low ionization energies (3) Have low melting points (4
Elements of Group 13 are namely, boron, aluminium, gallium, indium and, thallium. While studying the alkali and alkaline earth metals, you have seen that all the elements of these
The shape of 2p orbital is ; (1) Spherical (2) Ellipsoidal (3) Dumb-bell (4)Pyramidal ans: Dumb-bell
lanthanide element and their electronic configuration
what is oxidation state?
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