Periodic Table

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What is the reason for nitrogen having more ionisation energy than oxygen?

Nitrogen has a half filled p shell (correct)
Nitrogen has a fully filled d shell
Nitrogen has a fully filled s shell
Nitrogen has a fully filled p shell

What is the general trend of ionisation potential with respect to the number of valence electrons?

Ionisation potential shows no correlation with the number of valence electrons
Ionisation potential remains the same with the change in the number of valence electrons
Ionisation potential increases with the increase in the number of valence electrons (correct)
Ionisation potential decreases with the increase in the number of valence electrons

Which of the following elements has the highest ionisation energy?

Kr
Cl
He (correct)
Ne

What is the relationship between ionisation potential and reducing power of an element?

Lower ionisation potential means higher reducing power (B) Signup and view all the answers

What does the sudden jump in ionisation energy values indicate?

The removal of a non-valence electron (B) Signup and view all the answers

What is the relative nature of the bond formed during the combination of two elements dependent on?

Relative values of ionisation potential and electron affinity (B) Signup and view all the answers

What is the main reason why atomic radii of noble gases are largest in their respective periods?

Due to the presence of vander Waal's forces (A) Signup and view all the answers

What is the relationship between the size of an atom and its ionisation potential?

Ionisation potential decreases with an increase in atomic size (A) Signup and view all the answers

Which of the following is NOT a factor affecting the value of ionisation energy?

Electronegativity of the atom (A) Signup and view all the answers

Why is it more difficult to remove an electron from the outermost orbit of an inert gas?

Due to the complete octet ns2p6 configuration (C) Signup and view all the answers

What is the effect of an increase in nuclear charge on the ionisation potential of an atom?

It increases the ionisation potential (A) Signup and view all the answers

What is the reason why the ionisation energies of inert gases are greater than that of their immediate neighbours?

Due to their complete octet ns2p6 configuration (C) Signup and view all the answers

What is the energy required to remove an electron from the outermost orbit of an isolated gaseous atom in its ground state?

Ionisation energy (B) Signup and view all the answers

Why is the second ionisation energy higher than the first?

Because the electrons in the unipositive ion are more firmly bound to the nucleus (C) Signup and view all the answers

What is the trend in the variation of ionisation energy in the periodic table?

It is maximum for atoms with fully filled s2p6 shells (D) Signup and view all the answers

Which of the following atoms has a lower ionisation energy?

K (D) Signup and view all the answers

What is the unit of measurement for ionisation energy?

Electron volts (eV) or kilo calories per gram atom (C) Signup and view all the answers

What is the energy required to remove one electron from a unipositive ion to form a bipositive ion?

Second ionisation energy (B) Signup and view all the answers

What is the significance of Guoy's balance in the study of magnetism?

It is used to measure the paramagnetism of a species. (B) Signup and view all the answers

Which of the following is a characteristic of ferromagnetic substances?

They exhibit a high magnetic moment in the solid state. (D) Signup and view all the answers

What is the trend observed in the covalent nature of hydrides across a period?

It increases across a period and decreases down the group. (B) Signup and view all the answers

What is the reason behind the diagonal relationship between certain elements of the 2nd and 3rd periods?

They have identical ionic radii and polarizing power. (D) Signup and view all the answers

What is the significance of the number of unpaired electrons in a substance?

It determines the magnetic moment of the substance. (D) Signup and view all the answers

Which of the following hydrides exhibits a high ionic character?

CsH (B) Signup and view all the answers

Which of the following ions will have the maximum extent of hydration?

Al3+ (D) Signup and view all the answers

Which of the following is an exception to the chemical periodicity?

All of the above (D) Signup and view all the answers

What is the trend of acid-base character of oxides on moving across a period?

Changes from basic to amphoteric to acidic (C) Signup and view all the answers

What is the oxidation state of an element in a compound?

The total number of electrons it appears to have gained or lost (B) Signup and view all the answers

What determines the magnetic properties of matter?

The presence of unpaired electrons (D) Signup and view all the answers

What is the characteristic of a diamagnetic substance?

It is repelled by a magnetic field (B) Signup and view all the answers

What is the term for the enthalpy change that accompanies the dissolving of 1 mol of gaseous ions in water?

Hydration energy (A) Signup and view all the answers

Which of the following substances has a net magnetic moment owing to the presence of unpaired electron(s) in atoms, ions or molecules?

Paramagnetic (D) Signup and view all the answers

What is the unit of measurement for the magnetic moment of a substance?

Bohr Magnetons (BM) (C) Signup and view all the answers

Which of the following types of hydrides are better reducing agents than the others?

Ionic hydrides (D) Signup and view all the answers

What is the effect of an increase in nuclear charge on the magnetic properties of a substance?

The substance becomes paramagnetic (D) Signup and view all the answers

What is the relationship between the number of unpaired electrons and the magnetic moment of a substance?

Magnetic moment is equal to the number of unpaired electrons squared, plus 2 (D) Signup and view all the answers