Question

Metals are electro positive in nature. They have tendency to lose one or more electrons

present in the valence shell of their atoms to forms cat ions and achieve nearest noble gas

configuration. The compounds formed by transfer of electrons from one element to other are

known as ionic compounds. The electronic configuration of three elements X,Y and Z

X: 2, Y: 2,8,7 Z: 2,8,1

45. Which one is correct regarding these elements?

A. X is a noble gas

B. Y is a metal

C. X is a metal

D. Z is a non-metal

46. Element Z reacts with compound Y to form a compound ZY, which property is not

shown by compound ZY

A. High melting point

B. Low melting point

C. Occurrence as a solid

D. Conduction of electricity in molten state

47. What is the total number of electron in Yion

A. 11

B. 2

C. 17

D. 18

48. Which element/compound will be readily soluble in water

A. X

B. Y2

C. Z Y

D. Z​

Answer 1

Answer:

45. A

The given configuration of X corresponds to noble gas(He)

46. B

Y is Chlorine and Z is Sodium, thus ZY is NaCl. NaCl has high melting point

47. D

Y is a non metal (electronegative element), thus it will gain an electron electron to form an anion. Total number of electrons is 18.

48. C

We know that ZY is NaCl

Polar compounds tend to dissolve in water, and we can extend that generality to the most polar compounds of all—ionic compounds. Table salt, or sodium chloride (NaCl), the most common ionic compound, is soluble in water

Answer 2

Answer:

yes i mad

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Explanation:

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