Question

what is the valency factor of urea?​

Answer 1

Answer:

1

Explanation:

Answer 2

Explanation:

Number of valence electrons = 24 e- Draw sigma bonds.

Place remaining electron pairs on oxygen, Complete C atom octet with double bond.Leaves 24 - 14 = 10 e- pairs. And nitrogen atoms.

Nano-sized TiO2 was synthesized by solution combustion synthesis reactions. Titanyl nitrate [TiO(NO3)2] was used as the oxidizer (also as the source of Ti) and glycine (NH2CH2COOH, 99%, Aldrich), urea (CH4ON2, 99%, Showa) or thiourea (CH4SN2, 99%, Showa) were used as the fuel. Titanyl nitrate was prepared by first hydrolysis and then nitration of titanium n-butoxide (Ti(OC4H9)4, 99%, Acros. A foam type TiO2 powder was produced after the combustion synthesis reaction. The product was yellow, pale yellow or pale brown in color when using glycine, urea or thiourea as the fuel and hereafter, it would be referred to as TiO2(G), TiO2(U) or TiO2(T), respectively.