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Gaurav Seth 6 years, 3 months ago
The substance which can accept the electron pair donated by the Lewis base, they are termed as Lewis acid.
is a compound which is made up of two atoms namely boron and fluorine.
The atomic number of boron is 5 and its electronic setup is 2, 3. Its valency is 3 and Flourine (2,7) valency is 1.
Consequently, by imparting 1 electron to every fluorine molecule, boron has 3 sigma bonds around it which means that each boron atom is surrounded by 6 electrons.
To have the steady octet setup Boron needs 2 additional electrons.
Since boron can accept a couple of electrons from Lewis base, it is considered as Lewis acid.
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Yogita Ingle 6 years, 3 months ago
Following can be the limitations of nationalism:
1. the definition of the term ‘Nationalism’ is debated and discussed. It becomes difficult for us to settle on precise and widely accepted definitions which open this term for various interpretations.
2. Territory plays an important role creating the nation and develops the feeling of nationalism among its inhabitants. World is divided into different nation-states with an ongoing process of reshaping of boundaries and separatist struggles within existing states are common.
3. It is not possible for each cultural group to build its own nation-state therefore one nation-state integrate more than one cultural group.
4. Different cultural groups often get engaged in conflicts due to their separate nationalist aspirations and principle which is based on a desire for homogenous identity.
5. The role of Nationalism in this era of globalised world is yet to be completely explored and evaluated as national tendencies have different meaning in a world of interconnectedness.
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Yogita Ingle 6 years, 3 months ago
The Speaker of the Lok Sabha is the presiding officer of the Lok Sabha (House of the People), the lower house of the Parliament of India.
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Harender Singh 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
According to regional continuity model:
1) homo sapiens were distributed in different parts of the world.
2) the rate of evolution was different in different regions.
3) this created difference in physical appearance
According to replacement model:
1) all the forms of older man was replaced by modern man.
2) originated in Africa.
3) changes in physical apparance due to adaptation.
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Àmån Šhármä 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
The Second law of motion becomes easy if we know an object’s mass and acceleration so that we can find the net force on the object.
This concept is useful for blocks and rope problems and also for pulley system problems. Also we need to understand that tension is a force so the net tension of an object is the same as the net force.
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