Please select a subject first
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Give reasons for the following:
Aqueous solution of ammonia gives a pungent smell.
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Give reasons for the following:
Aqueous solution of ammonia conducts electricity.
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Name one salt of ammonia that is used in a dry cell.
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Name a compound prepared by ammonia and is used as explosive.
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Name a compound prepared by ammonia and is used as fertilizers.
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Name a compound prepared by ammonia and is used as medicine.
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Name a compound prepared by ammonia and is used as laboratory reagent.
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Ammonia reacts with excess chlorine to form ______.
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Li, K, Na, H (In the decreasing order of their ionization potential)
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Among the elements of the second period, Li to Ne, pick out the element with highest first ionization energy
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A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.
| Element | Atomic number | No. of electrons in the valence shell | Group to which the element belongs |
| A | Z - 1 | ||
| B | Z | ||
| C | Z + 1 |
Also, explain the following : Ionization energy of element C is less than that of element A.
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Arrange the following in increasing order of property indicated
Li, Be, B (ionization energy)
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What is meant by ionization potential?
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In a group, a particular element has the lowest ionization potential; does it ionize most easily or least easily? Explain with example.
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Electron affinities of two elements A and B are given below:
A = 3.79 electron volts
B = 3.56 electron volts
Which of them will ionize more easily and why?
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State whether the ionization potential increases or decreases on going down a group.
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With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Ionization potential increases from left to right across a period.
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Supply the missing word from those in the brackets:
If an element has a low ionization energy then it is likely to be ______ (metallic/ non-metallic).
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The metals of group 2 from top to bottom are: Be, Mg, Ca, Sr, Ba. Which of these metals will form ions most readily and why?
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Fill in the blank from the choices given below
Across a period, the ionisation potential ____________.
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