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The spectrum of He is expected to be similar to:
(1) H
(2) Li+
(3) Na
(4) He+
Ans: Li+
Which compound is highest covalent: (1) LiCl (2) FiF (3) LiBr (4) LiI Ans: LiI
Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,
What are the theoretical physical properties of esters?
Alum is a chemical (aluminum potassium sulphate) it tends to be whitish powder with various uses.
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
The amount of heat liberated when single mole of any substance is completely burnt in oxygen is known as heat of combustion H is negative for heat of combustion.
What is meant by a link solution ?
The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
Why lithium and beryllium markedly differ from other members of their respective groups?
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