Covid-19 is a global pandemic that brought social and economic hardship in Nigeria and other nations of the world. So, in post covid-19 era, Nigeria can apply technology such as electronics for social and economic wellbeing of people. Modern electronics involves the use of silicon. The focus of the paper is how silicon as a chemical element and prominent semiconductor has made technological impact in modern electronics, which in turn can be utilized for development of Nigeria society in post covid-19 era. The paper is a theoretical/opinion one with empirical information and it discussed on issue of post covid-19 era, scientific understanding of chemistry of silicon, technological impact of silicon in modern electronics and importance of modern electronics in boosting development in post covid-19 era. It was pointed out that: Silicon is the most familiar semiconductor used in formation of PN junction useful in production of solid state devices like diode, transistor and integrated circuit (IC) utilized in modern electronics; modern electronics can bring about development in post covid-19 era for it can be utilized in computerization of work, transmitting and receiving information, creation of job, acquisition of education, supply of energy, safeguarding of life and properties, and recreation. The paper concluded that technological value of silicon can be witnessed in modern electronics; and modern electronics offers social and economic value useful in ensuring well being of Nigeria people in post covid-19 era. Key Words: Post covid-19 era, silicon, modern electronics, technology, development. Introduction A