alleryAmong P, S, Cl and F, which has the most negative electron gain enthalpy?
- Cl
- S
- P
- F
Show answer and solution
Correct answer: A. Cl
Electron gain enthalpy becomes more negative across a period, and chlorine's 3p avoids fluorine's 2p crowding.
NEET UG Classification of Elements — practice questions — page 4
Explore 108 free Classification of Elements questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
Practise Classification of Elements with Quill →Classification of Elements questions and exercises with answers
Showing questions 91–108 of 108.
Among P, S, Cl and F, which has the most negative electron gain enthalpy?Read the answer and worked solution →Unlike ionization enthalpy, which property is not a directly measurable quantity?Read the answer and worked solution →Which electronegativity scale is the most widely used?Read the answer and worked solution →What electronegativity value did Pauling assign to fluorine?Read the answer and worked solution →How is electronegativity related to the metallic character of elements?Read the answer and worked solution →What formula is expected for the compound of aluminium and sulphur?Read the answer and worked solution →Silicon and bromine would combine to form a compound with which formula?Read the answer and worked solution →The similarity of lithium with magnesium is an example of what?Read the answer and worked solution →Second period p-block elements show a greater tendency than their heavier congeners to form what?Read the answer and worked solution →Which oxide is amphoteric?Read the answer and worked solution →Carbon monoxide, nitric oxide and nitrous oxide are examples of which type of oxide?Read the answer and worked solution →Down a transition group, ionization enthalpy shows what trend versus main groups?Read the answer and worked solution →In group 13, how does electronegativity change from boron to thallium?Read the answer and worked solution →Ionization energy is also referred to by which other name?Read the answer and worked solution →From group 1 to the noble gases, how does valency change?Read the answer and worked solution →How does nucleophilicity generally change from left to right across a period?Read the answer and worked solution →What is nuclear charge defined as?Read the answer and worked solution →Down a group, why do metallic properties generally increase?Read the answer and worked solution →
Worked practice questions
Unlike ionization enthalpy, which property is not a directly measurable quantity?
- Ionic crystal radius
- Covalent atomic radius
- Electronegativity
- Electron gain enthalpy
Show answer and solution
Correct answer: C. Electronegativity
Electronegativity is a qualitative tendency of a bonded atom, so it is expressed on derived scales rather than measured.
Which electronegativity scale is the most widely used?
- Sanderson scale
- Linus Pauling scale
- Allred-Rochow scale
- Mulliken-Jaffe scale
Show answer and solution
Correct answer: B. Linus Pauling scale
Several scales exist, but the Pauling scale is the one most commonly used.
How to practise
- Choose a Classification of Elements question and try to work out your answer.
- Open the question to check the correct answer and read its worked solution.
- Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.
Put it into practice
Continue with Classification of Elements practice for NEET UG. Read explanations as you go. No signup form needed to start.
Practise Classification of Elements →