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EMERGING ISSUES AND TRENDS IN HUMAN GROWTH AND DEVELOPMENT
| Institution | TVET |
| Course | DIPLOMA IN SOCIAL WO... |
| Year | 1st Year |
| Semester | Unknown |
| Posted By | stephen oyake rabilo |
| File Type | |
| Pages | 5 Pages |
| File Size | 372.95 KB |
| Views | 3186 |
| Downloads | 1 |
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Description
Emerging issues and trends in human growth and development encompass a wide array of
topics that are continually evolving as our understanding of human development deepens and
societal factors shift. Some notable emerging issues and trends include:
1. Technology and Development: The pervasive influence of technology on human
development is a significant trend. This includes concerns about screen time, social media
use, and the impact of digital devices on cognitive, social, and emotional development,
particularly in children and adolescents.
2. Changing Family Structures: Shifts in family structures, such as increasing rates of singleparent households, cohabitation, and same-sex parenting, have implications for child
development, family dynamics, and support systems.
3. Mental Health Awareness and Support: There is growing recognition of the importance of
mental health in overall development. Efforts to reduce stigma, increase access to mental
health services, and promote emotional well-being are gaining momentum.
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Reactions of Alkyl halides
In this type of reaction, a nucleophile reacts with haloalkane (the substrate) having a
partial positive charge on the carbon atom bonded to halogen. A substitution reaction takes place and halogen atom, called leaving group departs as halide ion. Since the substitution reaction is initiated by a nucleophile, it is called nucleophilic substitution reaction
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Substitution and Elimination Electron Flow Pathway
Path Limitations
There are three requirements for the S N 2 reaction.
In order to be pushed out, the leaving group must be at least fair, usually good. The nucleophile also must be reactive enough to push out the leaving group.
Finally, the back side of the tetrahedral carbon attacked must be
accessible to the nucleophile and not blocked by other groups.
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The SN2 reaction
The hydroxide ion is a good nucleophile since the oxygen atom has a negative charge and a pair of unshared electrons.
The carbon atom is electrophilic since it is bound to a (more electronegative)
halogen, which pulls electron density away from the carbon, thus polarizing the
bond with carbon bearing partial positive charge and the halogen bearing partial negative charge.
The nucleophile is attracted to the electrophile by electrostatic charges.
The nucleophile attacks the electrophilic carbon through donation of 2 electrons. Carbon can only have a maximum of 8 valence electrons, so as the carbon nucleophile bond is forming, then the carbon-leaving group bond must be breaking. Iodide is the leaving group since it leaves with the pair of electrons that once bound it to carbon.
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