¿Que entiendes por el desarrollo de un país ?

En Español: Un país desarrollado, un país industrializado, tiene una economía madura y sofisticada, generalmente medida por el producto interno bruto (PIB) y / o el ingreso promedio por residente. Los países desarrollados tienen una infraestructura tecnológica avanzada y diversos sectores industriales y de servicios.

En English: A developed country, industrialized country, has a mature and sophisticated economy, usually measured by gross domestic product (GDP) and/or average income per resident. Developed countries have advanced technological infrastructure and have diverse industrial and service sectors.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.