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The charge on the atom containing 17 protons, 18 neutrons and 18 electrons is: (1) +1 (2) -2 (3) -1 (4)Zero Ans: -1
#question:although CO is well known,why doesn''t SiO exist under normal conditions?
Ratio of radii of second and first Bohr orbits of H atom: (1) 2 (2) 4 (3) 3 (4) 5 Ans: 4
excited state for sodium
get calcium EDTA from disodium EDTA and calcium which in complexomteric reaction. how mechanism of making ??
Question .. #
Q. Chemical Properties of group16? Oxygen is slightly less reactive than the halogens but reacts directly with nearly all the elements except the noble gases, the halogens and
Analysis show that nickel oxide has formulla ni .98 O 1.00 what fraction of the of nickel exist as ni+3 & Ni +2 Ans) ni+2=95.91 and ni+3=4.09
Uses of Resorcinol (a) Resorcinol is used as antiseptic and for creating dyes. (b) Resorcinol is also used in the medicine of eczema. 2, 4, 6-trinitroresorcinol is required
Q. Illustrate Metallic Bonding? Ans. A metal is crystalline because it has a regularly repeating, closely packed structure. In a metal, though, this closely packed structu
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