Answer Posted / guest

Isotope:-These can be defined as forms of some element
having the same at number, but different weight due to
different nuclear structures. Atomic Weight of these
elements are only average weights on mixture of isotopes

Isobars:-These are defined as atoms of different elements
with different atomic numbers but same atomic weight

Stable configuration:-This concept was put forward by Lewis,
Langmioir. According to this the electronic arrangement in
which eight electrons are present in the outermost orbit is
known as stable configuration

Electronic Theory of Valency:-The electronic present in
outermost orbit of an atom determine its valency and these
are known as valency electrons. If the valency electrons are
removed the reminder of atom is known as kernel of atom

Valency:-It can be defined according to electronic theory as
the number of electron it can lend, barrow or store. A
lending at atom is known as electro positive while borrowing
atom is called as electronegative

Do all explosions produce carbon dioxide or carbon monoxide?

1160

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Why is acetic acid added?

1237

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Why be is not soluble in liquid ammonia?

1167

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explain sour gas?

1112

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Which is the indicator used in the determination of cao I cement solution?

1046

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State lambert’s law.

1272

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Why is the color of the indicator drop remains the same at the end point?

1287

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Explain the structure of a dna molecule?

1126

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What is the metal used to extract copper from the solution of copper sulphate?

1119

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What is blank solution?

1132

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How many millilitre is equal to 1 litre and how many microliter is equal to litre?

1149

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Why is ph increases suddenly after the equivalence point?

1074

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What is density of a liquid?

1202

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How will you calculate how many moles of glucose present in 320 ml of 5.0 m of glucose solution?

1164

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Why is the role of glycerol & naoh?

1123

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