NEET Chemistry MCQ: NCERT Electro Negativity & Valency | NEET.Guide Questions

Which of these elements generally has a valency of 1?

A

Magnesium

B

Calcium

C

Sodium

D

Oxygen

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Valency, Periodic Table

Related Questions

Which of the following is a false statement?

A

Fluorine is more electronegative than chlorine

B

Nitrogen has greater ${\rm{I}}{{\rm{E}}_1}$ than oxygen

C

Lithium is amphoteric

D

Chlorine is an oxidising agent

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Analyzing

🎯Difficulty :Easy

⚡ Time Required :2 mins

🔄Ncert Concepts :electronegativity, ionization energy, amphoteric nature, oxidizing agent

${\rm{N}}{{\rm{a}}_2}{\rm{O}},{\rm{\;MgO}},{\rm{A}}{{\rm{l}}_2}{{\rm{O}}_3}{\rm{\;and\;Si}}{{\rm{O}}_2}{\rm{\;}}$ have heat of formation equal to $- 416, - 602, - 1676\;$ and $- 911{\rm{\;kJ\;mo}}{{\rm{l}}^{ - 1}}$ respectively. The most stable oxide is

A

Na₂O

B

MgO

C

Al₂O₃

D

SiO₂

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Heat of formation, Stability of compounds

Which of the following elements is the MOST electropositive?

A

F

B

Cl

C

K

D

Cs

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Electropositivity, Periodic Trends

The electronegativity order of $O$ , $F$ , $Cl$ and $Br$ is:

A

${\rm{F}} > O > Cl > Br$

B

${\rm{F}} > Cl\left\langle {Br} \right\rangle O$

C

${\rm{Br}} > Cl > F > O$

D

${\rm{F}} < Cl < Br < O$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :electronegativity, periodic trends

As you move down a group in the periodic table, electronegativity generally:

A

Increases

B

Decreases

C

Remains the same

D

Fluctuates

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Understanding

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Electronegativity, Periodic Trends

Which of the following correctly ranks the elements in order of increasing electronegativity: $\mathrm{O, F, N, C}$ ?

A

$\mathrm{F < O < N < C}$

B

$\mathrm{C < N < O < F}$

C

$\mathrm{N < C < O < F}$

D

$\mathrm{O < F < C < N}$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

PYQ YEAR: 2024

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :periodic trends, electronegativity

Which of the following statements is INCORRECT regarding electronegativity?

A

Electronegativity increases across a period.

B

Electronegativity decreases down a group.

C

Noble gases have very low electronegativity.

D

Metals are more electronegative than nonmetals.

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Electronegativity, Periodic Trends

An element X which occurs in the first short period has an outer electronic structure ${s^2}{p^1}$ . What are the formula and acid-base character of its oxides?

A

$X{O_3},$ basic

B

${X_2}{O_3}$ , basic

C

${X_2}{O_3},\;$ amphoteric

D

$X{O_2},\;$ acidic

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :electronic configuration, chemical formula, oxide acidity, amphoteric nature

Which one of the following has the highest electronegativity?

A

Fluorine

B

Oxygen

C

Sodium

D

Potassium

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :electronegativity, periodic trends

The values of electronegativity of atom A and B are 1.20 and 4.0 respectively. The percentage of ionic character of A-B bond is

A

48%

B

72%

C

16%

D

92%

Question Tags

📚 Subject:Chemistry

📑 Chapter:Classification of Elements and Periodicity in Properties

🎯Topic:Electro Negativity, Electro Positivity, Valency

🎓 Ncert Level:Application

🎯Difficulty :Medium

⚡ Time Required :3 mins

🔄Ncert Concepts :electronegativity, ionic character, Pauling equation

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