calculate the Zeff for 4s electron in Fe-atom using Slater's rule.
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Introduction
The informal sector plays a vital role in economic development of all the countries. Particularly, developing countries one third of national income comes from this informal sector only. The informal sector reduces the unemployment. The entrepreneurs are in this sector for their livelihood, not for making more profit. Some informal entrepreneurs are earning more than the formal employees in our country, like vegetable vendors, agents, brokers, foot-path traders etc. Majority of the entrepreneurs are community based in this sector. In India, each community has their own business. Rural, urban and city side also community based entrepreneurs are more. For example, foot wears and beauty parlor etc. The informal sector develops the Indian economy invisibly. Most of the rural and urban people are continuing their family business, because of lack of employment opportunity, In India most of the family businesses are in the informal sector. The earned income from this sector has utilized for the purpose of their children education, family commitments, personal savings, etc. So the government should take necessary steps to convert this sector into formal.
Informal Economy
The informal sector constitutes largest portion of the economy in terms of value addition, savings, investments etc. The share of formal sector is around 12 -14 percent in our national income while that of informal sector is more than 30 percent. 1n the case of United States, the share of corporate business is nearly 70 percent.
The informal forms of organizations are major players in such activities as manufacturing, construction, transport, trade, hotels and restaurants, and business and personal services. The informal sector plays a significant role in the economy in terms of employment opportunities and poverty alleviation. This sector generates income-earning opportunities for a large number of people. In India, a large section of the total workforce is still in the informal sector, which contributes a sizeable portion of the country's net domestic product.
While analyzing the composition of the Indian Economy, it is of two major sectors namely, organized and unorganized. The organized sector contributes two third to the GDP. Whereas the remaining 1/3 is by unorganized sector. The following statistics by National Account Statistics reveals the contribution of unorganised sector to the NDP.
Definition by NSO