Electronegativity

Q.

Define electronegativity? How does it differ from electron gain enthalpy?

Q.

What is the ability of each atom to attract shared electron pairs towards itself?

1. Polarity

2. Electronegativity

3. Electropositivity

4. Ionization

Q.

From top to bottom in a group, electronegativity increases.

1. True

2. False

Q. Electronegativity is tendency of an atom to attract a shared pair of towards itself.

1. electrons
2. protons
3. neutrons

Q.

What is the difference in electronegativity between carbon and nitrogen?

Q.

What is meant by Lattice energy, ionisation energy.

Sir/Ma'am what is the difference between them

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Q.

Every atom has an electron which conduct electricity and is a conductor. As all atom contains electron and has a negative charge with conducts electricity .why does all atoms or object is not an conductor or does not conduct electricity.

Q. Hydrogen is similar to halogens as it has a electron gain enthalpy.

1. high
2. low
3. moderate

Q.

The difference between the electronegativity value of fluorine and sodium is more than 1.7 so the compound formed by them will be ionic in nature.

1. False

2. True

Q.

Plasma is a mixture of:

1. Protons and neutrons

2. Free radicals and ions

3. Free electrons and ions

4. Free electrons only

Q.

Which of the following element has the highest electron-gain enthalpy?

1. oxygen

2. neon

3. chlorine

4. fluorine

Q. Electronegativity across a period while it down a group.

1. increases
2. decreases
3. remains same
4. $\mathrm{increases}\mathrm{then}\mathrm{decreases}$

Q.

Electronegativity is the tendency of an atom in a molecule to attract the shared pair of electrons towards itself.

1. False

2. True

Q.

The properties which increase on going down the group are__________.

1. ionization energy and electro negativity

2. atomic size and ionization energy

3. electronegativity and atomic size

4. metallic character and reducing power

Q. What is the meaning of electropositivity and electronegativity?

Q.

Graphite is used in making electrodes because:

1. It has a high melting point

2. It is soft and slippery

3. It is a good conductor of electricity

4. None of these

Q.

Which of the following statements are true about electronegativity in the periodic table?

1. Fluorine is the most electronegative element

2. Electronegativity is directly proportional to nuclear charge

3. Size of the atom doesn't depend on the electronegativity of an element

4. Electropositive elements tend to let go their valence electrons

Q.

Select the correct arrangement for increasing electronegativity from the given option.

1. F < Cl < Br < I

2. I < Br <Cl < F

3. Br < I < F < Cl

4. I < F < Cl < Br

Q. List of compounds having +M and -M effect

Q.

When electrons in an atom in an excited state fall to lower energy levels, energy is -

1. Released only

2. Both released and absorbed

3. Absorbed, only

4. Neither released nor released

Q. The most electropositive element among the following is :

1. C
2. B
3. Si
4. Al

Q.

Electronegativity of element X is 2.20 and electronegativity of element Y is 2.55. The compound formed between them is covalent.

1. Covalent compound

2. Ionic compound

Q.

That distribution of electrons in an atom of potassium is what?

Q. How many elements are naturally occuring among the known elements till date?

Q.

Electron affinity is the ___.

1. Energy absorbed when an electron is added to an isolated atom in the gaseous state

2. Energy released when an electron is added to an isolated atom in the gaseous state

3. Energy required to take out an electron from an isolated gaseous atom

4. Power of an atom to attract an electron to itself

Q. Order of proton accepting tendency among HS, I RNH2 , NH3

Q. What kind of energy are we referring when we say that electrons gains or loses energy when it jumps from one energy shell to another?

Q.

Why is there an increase in successive I.P values?

Q.

Which of the following statement is true regarding the electronegativity values of Sodium and Chlorine?

1. Electronegativity of Sodium is three times that of Chlorine

2. Electronegativity of Sodium is less than that of Chlorine

3. Electronegativity of Sodium is equal to that of Chlorine

4. Electronegativity of Sodium is twice that of chlorine

Q. The presence of ___________ on the central atom decreases the bond angle of the molecule.

1. lone pair
2. positive charge
3. negative charge
4. unpaired electrons