Electronegativity is the tendency of an atom to attract electrons to itself when chemically combined with another element. It can increase across a period but decreases down a group.
Electron affinity is the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.
Chepj answered the question on January 22, 2018 at 20:55
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Explain why the reaction between lead (ll) oxide and sulphuric (lv) acid comes to a stop almost immediately?
(Solved)
Explain why the reaction between lead (ll) oxide and sulphuric (lv) acid comes to a stop almost immediately?
Date posted:
January 21, 2018
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Answers (1)
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What is titration?
(Solved)
What is titration?
Date posted:
January 21, 2018
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Answers (1)
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Using kinetic theory explain effect of temperature on pressure of a gas
(Solved)
Using kinetic theory explain effect of temperature on pressure of a gas.
Date posted:
January 20, 2018
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Answers (1)
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Using kinetic theory explain the effect of temperature on pressure of a gas
(Solved)
Using kinetic theory explain the effect of temperature on pressure of a gas
Date posted:
January 20, 2018
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Answers (1)
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What are the types of atomizers and their examples?
(Solved)
What are the types of atomizers and their examples?
Date posted:
January 19, 2018
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What is the difference between liquid-liquid extraction and ion exchange?
(Solved)
What is the difference between liquid-liquid extraction and ion exchange?
Date posted:
January 19, 2018
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Answers (1)
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What is experimental research?
(Solved)
What is experimental research?
Date posted:
January 18, 2018
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What are the sources of heat in laboratory?
(Solved)
What are the sources of heat in laboratory?
Date posted:
January 8, 2018
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What is the role of chemistry in society?
(Solved)
What is the role of chemistry in society?
Date posted:
January 8, 2018
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Differentiate between conductors and non-conductors
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Differentiate between conductors and non-conductors.
Date posted:
January 8, 2018
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(i) What is a mixture (ii) Give various ways used to separate a mixture
(Solved)
(i) What is a mixture (ii) Give various ways used to separate a mixture
Date posted:
January 8, 2018
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Answers (1)
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Explain why factories use alot of energy as heat energy to obtain nitrogen while root nodules obtain in room temperature
(Solved)
Explain why factories use alot of energy as heat energy to obtain nitrogen while root nodules obtain in room temperature.
Date posted:
January 7, 2018
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Answers (1)
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What is the chemical name of perspex?
(Solved)
What is the chemical name of perspex?
Date posted:
January 4, 2018
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Answers (1)
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A hydrated salt has the following composition by mass. Iron 20.2%, Oxygen 23.0%, Sulphur 11.5%, Water 45.3%. Its relative formula mass is 278. determine the...
(Solved)
A hydrated salt has the following composition by mass. Iron 20.2%, Oxygen 23.0%, Sulphur 11.5%, Water 45.3%. Its relative formula mass is 278. Determine the formula of hydrated salt
Date posted:
December 31, 2017
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Answers (1)
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Which is the best method to separate sodium chloride from a solution of potassium chloride and sodium chloride mixture?
(Solved)
Which is the best method to separate sodium chloride from a solution of potassium chloride and sodium chloride mixture?
Date posted:
December 30, 2017
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Answers (1)
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What is a burette?
(Solved)
What is a burette?
Date posted:
December 28, 2017
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Answers (1)
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State and explain what is observed when a burning piece of magnesium is lowered into a gas jar containing dry chlorine gas
(Solved)
State and explain what is observed when a burning piece of magnesium is lowered into a gas jar containing dry chlorine gas
Date posted:
December 26, 2017
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Answers (1)
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What is a compound?
(Solved)
What is a compound?
Date posted:
December 23, 2017
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Answers (1)
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What is an element?
(Solved)
What is an element?
Date posted:
December 23, 2017
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Answers (1)
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Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action
(Solved)
Give the observations made when lead (ii)nitrate is heated strongly and write a balanced chemical equations to show the action
Date posted:
December 21, 2017
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Answers (1)