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Question 50 a...

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Question 50 (a)

An element X of group 15 exists as diatomic molecule and combines with hydrogen at 773 K in presence of the catalyst to form a compound ammonia which has a characteristic pungent smell.

Identify the element X. How many valence electrons does it have?

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Solution

The element is Nitrogen (N) with atomic number 7 and it exists as a diatomic molecule ( $N_{2}$ ).
Its electronic configuration is 2,5 and it has 5 valence electrons.

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Q. Question 50 (b)
An element X of group 15 exists as diatomic molecule and combines with hydrogen at 773 K in presence of the catalyst to form a compound, ammonia which has a characteristic pungent smell.

Draw the electron dot structure of the diatomic molecule of X. What type of bond is formed in it?

An element X of group 15 exists as diatomic molecule and combines with hydrogen at 773 K in presence of the catalyst to form a compound, ammonia which has a characteristic pungent smell. The element X is :

Q. An element 'X' has 5 electrons in its valence shell which is 'L' shell. It forms a binary compound with hydrogen. In its liquid state, intermolecular forces exist between the molecules. Name the type of forces:

Q. An element X combines with hydrogen to form a compound

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. The element X is placed on the right side of the periodic table. What is true about the element X?
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(b) Is a metal and is solid
(c) Is a non-metal and is a gas
(d) Has

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N H_{3}

reacts with water to form a basic compound.

Q. An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting.

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(b) To which group of the periodic tables does the element X belong?
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