EASY
JEE Main/Advance
IMPORTANT
Earn 100

Which of the following is affected by the stable electron configuration of an atom?
(a) Electronegativity
(b) lonisation enthalpy
(c) Electron gain enthalpy
Correct answer is:
(a)only electronegativity
(b)only ionisation enthalpy
(c)both electron gain enthalpy and ionisation enthalpy
(d)all of the above

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Important Questions on Classification of Elements and Periodicity in Properties
EASY
JEE Main/Advance
IMPORTANT
The electronegativity values of and on Pauling scale:

EASY
JEE Main/Advance
IMPORTANT
Correct order of electronegativity of and on Pauling scale is:

EASY
JEE Main/Advance
IMPORTANT
The correct order of electronegativity on Pauling scale is:

EASY
JEE Main/Advance
IMPORTANT
Which of the following is most electronegative element?

EASY
JEE Main/Advance
IMPORTANT
The most common oxidation state of an element is . The number of electrons present in its outer most shell is:

EASY
JEE Main/Advance
IMPORTANT
Which of the following explanations justifies not placing hydrogen in either the group of alkali metals or halogens?

MEDIUM
JEE Main/Advance
IMPORTANT
Hydrogen accepts an electron to form an inert gas configuration. In this it resembles:

HARD
JEE Main/Advance
IMPORTANT
(a) Explain why is sodium less reactive than potassium?
(b) value of is more than that of while it's value is less. Explain?
