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The values of IE1 , IE2 , IE3, IE4 and I...

The values of `IE_1 , IE_2 , IE_3, IE_4` and `IE_5` of an element are 5.98, 18.82, 28.44, 120 and 153.8 eV respectively. The element is likely to be

A

Si

B

AI

C

C

D

P

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The correct Answer is:
B
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The element having lowest IE_(1)

The element having lowest IE_(1)

The second ionisation energies are higher than the first ionisation energies. This is mainly due to the fact the after the removal of the first electron, the atom changes into monovalent positive ion. In the ion, the number of electrons decreases but the nuclear charge remains the same. as a result of this, the remaining electrons are held more tightly by the nucleus and it becomes difficult to remove the second electron. therefore, the value of second ionisation energy. (IE_(2)) , is greater than that of the first ionisatio energy (IE_(1)) . similarly third ionisation energy (IE_(3)) is greater than that of second IE_(2) . Q. IE_(1) and IE_(2) of Mg metal are 178 and 348 kcal/mol respectively. the energy required for the given reaction is: Mg(s) to Mg^(+2)+2e^(-)

The second ionisation energies are higher than the first ionisation energies. This is mainly due to the fact the after the removal of the first electron, the atom changes into monovalent positive ion. In the ion, the number of electrons decreases but the nuclear charge remains the same. as a result of this, the remaining electrons are held more tightly by the nucleus and it becomes difficult to remove the second electron. therefore, the value of second ionisation energy. (IE_(2)) , is greater than that of the first ionisatio energy (IE_(1)) . similarly third ionisation energy (IE_(3)) is greater than that of second IE_(2) . Q. IE_(1) and IE_(2) of Mg metal are 178 and 348 kcal/mol respectively. the energy required for the given reaction is: Mg(s) to Mg^(+2)+2e^(-)

Consider the successive ionisation energy for an element 'A' . IE_(1) , IE_(2) , IE_(3) , IE_(4), IE_(5) are 100 eV , 150 eV , 181eV , 2000 eV , 2200 eV . Select correct statement (s) for element 'A' : a)Element 'A' may be metal b)Element 'A' may from trivalent cation c)Oxide of element 'A' may be amphoteric d)Element 'A' may be non-metal

VMC MODULES ENGLISH-PERIODIC PROPERTIES OF ELEMENTS-ENABLE
  1. Period to which boron belongs is

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  2. Pd has exceptional electronic configuration of 4d^(10) 5s^(0) . It be...

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  3. The values of IE1 , IE2 , IE3, IE4 and IE5 of an element are 5.98, 18....

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  4. Period to which carbon belongs is

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  5. For two elements forming a bond, |XA –XB| = 2.0. What is percent ionic...

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  6. Allred – Rochow’s electronegativity depends upon

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  7. Which of the following oxides is neutral ?

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  8. The incorrect statement among the following is

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  9. Atomic number of an element is 17. State the group to which it belon...

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  10. Atomic number of an element is. 13. State the group to which it belo...

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  11. Compounds that formally contain Pb^(4+) are easily reduced to Pb^(+2) ...

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  12. Atomic number of an element is 16. State the group to which it belong...

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  13. Atomic number of an element is 14. State the group to which it belong...

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  14. First, second, third and fourth IE values in eV of M are 6.11, 11.87, ...

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  15. The electronic configuration of four elements L, P, Q and R are given ...

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  16. Calculate the electronegativity value of an atom on Pauling scale is, ...

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  17. Atomic number of an element is 19. State the group to which it belon...

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  18. Atomic number of an element is 11. State the group to which it belong...

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  19. The elements in increasing order of ionization energy are

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  20. Which of the following transition metal cation has maxi- mum unpaired ...

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