With the use of suitable sketches, briefly describe the bonding in the H3+ ion and explain why this ion is considered to be electron deficient.
With the use of suitable sketches, briefly describe the bonding in the H3+ ion and explain why this ion is considered to be electron deficient.
a) Briefly describe the probable moisture conditions of aggregates with the aid of suitable sketches (5 Marks)
Briefly describe the use of profile boards in setting out works in a construction site. Use clear sketches for explanations. b) a) Describe the setting out method for a rectangular structure using a theodolite and tape. c) What is meant by a slope stake? Briefly describe how the position of a slope stake can be established for a road embankment by using a tape and a levelling instrument. d) Calculate the data that are required to establish a batter rail...
3- Describe the process of electron flow in reverse and explain why many chemolithotrophs use it.
Why is de-ionized (ion-exchange) water not suitable as a solvent for use in UV absorbance measurements?
explain the structure and bonding of the compound focusing on
bolded elements. describe important features like polar/non polar
covalent, donor-acceptor, multi-center,multi electron. overall
geometrt and potential constituent building blocks.
Dipp iPr Si-Ge Me Dipp C-N Dipp Me-N H iPr ion, and there is no single correct s
the lewis structure for the thiocyanate ion, SCN, requires resonance structures to describe its bonding situation. Assign formal charges to the atoms in each resonance structure and determine which structure best represents the actual bonding SCN. explain
6. (a) Based on molecular orbital theory explain the formation of bonding and anti-bonding molecular orbitals. (b) Consider two elements X and Y .Their electron affinity (Ea) values are given as Element Ea (KJ/mol) 300 Y 75 i) If the elements X and Y form X and Y ions, formation of which ion will liberate more energy .Why? i) Assuming that they are in the same period, which element would have smaller ionization energy and why? Explain
Electron configurations are not always 'predictable' from the periodic table Briefly explain why Cr and Cu have experimental electron configurations that differ from what is expected from the periodic table. Then explain why so many f block elements have ‘unusual’ experimental electron configurations.
4. Draw the o and a bonding interactions for a metal carbonyl bond. Very briefly explain why this interaction weakens the CO bond strength.
7) Briefly describe the function of LDL and HDL in the body and explain why one is known as the "good" cholesterol and the other as the "bad" cholesterol
7) Briefly describe the function of LDL and HDL in the body and explain why one is known as the "good" cholesterol and the other as the "bad" cholesterol