The basic requirement for a ligand is: unpaired electrons lone pair(s) of electr

Question

The basic requirement for a ligand is: unpaired electrons lone pair(s) of electrons (i.e., unbonded pairs) a four year degree, followed by a two year internship charges A radioactive isotope has a half-life of four years. After 25 years, how much of an 80 gram sample remains? 80. g 2.5 g 10. g 40. g The splitting of a larger nucleus into two lighter nuclei is known as atomic combustion a chain reaction fusion fission The loss of a alpha particle by_93^239Np results in_94^238Pu_92^239U_91^235Pa_94^239Pu Aromatic hydrocarbons contain essential oils a benzene ring a C-O-C group "Saturation" in reference to hydrocarbons means no multiple bonds at least one multiple bond contains as much solute as the solvent can hold dripping with water Ester, ethers, and carboxylic acids all contain, at a minimum, which elements? carbon, hydrogen, chlorine carbon, hydrogen, oxygen, nitrogen carbon, hydrogen, nitrogen carbon, hydrogen, oxygen

Explanation / Answer

1 b)lone pair of electrons

2. n = elapsed time/half life = 25/5 = 5

ending amount = beginning amount / 2n = 80/32 = 2.5g

b)2.5 g

3. d)fission

4. d)239Pu94

5. b)benzene ring

6. a)no multiple bonds

7. d)carbon,hydrogen,oxygen

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