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Covalent Bond

An element X ...

Question

An element X (atomic number 12) reacts with another element Y (atomic number 17) to form a compound Z. Which of the following statements are true regarding this compound?

I. Molecular formula of Z is $X Y_{2}$

II. It is soluble in water

III. X and Y are joined by sharing of electrons

IV. It would conduct electricity in the molten state.

A

(II) and (III)

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B

(I) and (III)

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C

(I), (III) and (IV)

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D

(II) and (IV)

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Solution

The correct option is D
(II) and (IV)

X = Mg

Y = Cl

Z = $M g C l_{2} (X Y_{2})$

$M g C l_{2}$ is an ionic compound & it conduct electricity in the molten state.

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Similar questions

X

12

) reacts with another element

Y

17

) to form a compound

Z

. Which of the following statements are true regarding this compound?
I. Molecular formula of

Z

X Y_{2}

.
II. It is soluble in water.
III.

X

Y

are joined by sharing of electrons.
IV. It would conduct electricity in the molten state.

(a) Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one :

(i) forms an anion, (ii) forms a cation,

(b) State the type of bond between Y and Z and give its molecular formula.

Q. Element X combines with element Y to form a compound Z. If the atomic numbers of X and Y are 12 and 16 respectively, the formula of Z is :-

Q. Ramu has an element

X

with an Atomic Number of 13, while Somu has an element

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with an Atomic Number of 16. If Ramu and Somu mix those elements and heat it, a new compound of

Z

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Keeping this mind and answer the following question.
i) Write the electronic configuration of

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ii) Write the electronic configuration of

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iii) Which one is a metal and which is a non-metal?
iv) What is the valency of

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v) What is the valency of

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vi) Write the formula of

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Q. An element with atomic number

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