Examlex
Which of the following ions has the greater effective nuclear charge?
Pre-migration
The period before migration that involves preparation and decision-making processes by potential migrants.
Brain Drain
The migration of skilled professionals from one country to another, often for better career opportunities or living conditions.
Highly Educated Workers
Individuals who have attained a high level of education, typically resulting in specialized skills and knowledge.
Low-income Countries
Nations with a gross national income (GNI) per capita significantly lower than the global average, often characterized by limited economic resources and infrastructure.
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