Acknowledgement Free

The author expresses a deep sense of gratitude to the Atomic Minerals Directorate for Exploration and Research (AMDER) epitomes, namely, to former Chemistry Group Heads Mr K. P. Cheria and (late) Mr B. N. Tikoo, and former AMDER Directors, (late) Mr R. Kaul and Dr K. K. Dwivedi, for their constant support and encouragement in shaping his career throughout his tenure at AMDER. The author expresses his gratitude to all his friends and colleagues from the scientific community across the globe, in particular to Ms Liv Towers at the Royal Society of Chemistry for her support. The author also wishes to thank Dr V. Balaram, CSIR, NGRI, for his valuable technical support from time to time. Thanks are due to Dr Vijayalaxmi C. Adya, former Scientist, BARC, Mumbai, for her technical support. The book would not have seen the light but for the timely support rendered by the author's student Mr Maharshi Pandya. Lastly, the author wishes to express his sense of deep appreciation to loving family members for their constant support throughout the journey of writing this book.