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Which of the following is not isoelectronic:
(1) Na+
(2) Mg2+
(3) O2-
(4) Cl-
Ans:(d)Cl-
Uses of methanol - Uses of monohydric alcohol (1) Methanol is extremely important industrial starting material for making formaldehyde, acetic acid and other chemicals. (2)
Photon absorption for IR spectroscopy Photon absorption for IR spectroscopy
Covalent compounds are generally ...... in water: (1) Soluble (2) Insoluble (3) Dissociated (4) Hydrolysed Ans:
The molecule having one unpaired electron is: (1) NO (2) CO (3) CN - (4) Fe Ans: NO
what/s this test
What is the effect of more electronegative atom on the strength of ionic bond: (1) Decreases (2) Increase (3) Decreases slowly (4) Remains the same Ans: Increase
preparation and structure of xenon fluorides
what is water gas and how is it prepared?
why lithium and beryllium markedly differ from other members of their respective groups?
examples
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