An element X combines with hydrogen to form a compound $N H_{3}$ . The element X is placed on the right side of the periodic table. What is true about the element X?
(a) Has $3$ valence electrons
(b) Is a metal and is solid
(c) Is a non-metal and is a gas
(d) Has $5$ valence electrons
(e) $N H_{3}$ reacts with water to form a basic compound.

(a), (b) and (c)

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(b), (c) and (d)

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(c), (d) and (e)

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(e), (a) and (b)

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Solution

The correct option is B (c), (d) and (e)
X is N because it is placed on the right side of the periodic table & compound is $N H_{3}$ . X is a non metal and valence electrons are $5$ & $N H_{3} + H_{2} O \to N H_{4} O H$ (Base)

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Similar questions

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

X H_{3}

. The element X is placed on the right side of the periodic table. What is true about the element X?
A. Has valence electrons.
B. Is a metal and is solid.
C. Is a non-metal and is a gas.
D. Has a

5

valence electrons.
E.

X H_{3}

reacts with water to form a basic compound.

An element X combines with hydrogen to form a compound $X H_{3}$ . The element X is placed on the right side of the periodic table. What is true about the element X?
A. Has 3 valence electrons

B. Is a metal and is solid.

C. Is a non-metal and is a gas.

D. Has 5 valence electrons.

E. $X H_{3}$ reacts with water to form a basic compound.

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(b) Molecular formula of the compound when 'X' reacts with hydrogen and write its electron dot structure.

(c) Name the element 'X' and state whether it is metallic or non-metallic.

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The correct option is B (c), (d) and (e)X is N because it is placed on the right side of the periodic table & compound is NH3. X is a non metal and valence electrons are 5 & NH3+H2O→NH4OH(Base)

The correct option is B (c), (d) and (e)
X is N because it is placed on the right side of the periodic table & compound is $N H_{3}$ . X is a non metal and valence electrons are $5$ & $N H_{3} + H_{2} O \to N H_{4} O H$ (Base)