This is known as a family which contains two parents and one child the nuclear family creates a stable environment so children raised in this family with the same parents during their growing years have a higher likelihood of having stability in their relationship and emotional bonding. Also this family provides a sense of consistency because when children grow up in a nuclear family, they get a sense consistency, especially when it also includes closeness with other members of the family such as grandparents, aunts and uncles, and cousins.
It also provides them with learning skills as children usually get far more extensive training in life skills living in a nuclear family. For instance, mothers usually teach their children relationship skills, like emotional response skills and how to have smooth relations with others, while fathers, in general, teach their children handiwork skills and sports skills, like fixing things around the house or hitting a baseball, as well as how to deal with the world outside.
Lastly this sort of family upbringing allows physical and emotional support.
The Nuclear family usually have more physical and emotional resources with which they can reinforce the whole. Through observing their parents and by following the examples set by them, children learn how to help in the building of the family. uclear family is a term used to define a family group consisting of a pair of adults and their children. This is in contrast to the smaller single-parent family, and to the larger extended family. Nuclear families typically center on a married couple, but not always; the nuclear family may have any number of children.
There are differences in definition among observers; some definitions allow only biological children that are full-blood siblings, while others allow for a stepparent and any mix of dependent children including stepchildren and adopted children.  Families structures of a single married couple and their children were present in Western Europe and New England in the 17th century, influeced by church and theocratic governments.  With the emergence of proto-industrialization and early capitalism, the nuclear family became a financially viable social unit.
The term nuclear family appeared in the early twentieth century, with the term nuclear itself appearing in the 1840s.  Alternative definitions have evolved to include family units headed by same-sex parents, and perhaps additional adult relatives who take on a cohabiting parental role.  The concept that a narrowly defined nuclear family is central to stability in modern society has been promoted by modern social conservatives in the United States, and has been challenged as historically and sociologically inadequate to describe the complexity of actual family relations.