Ionisation Energy

Q.

The Number of moles Of ${\mathrm{KMnO}}_4$ required to oxidise one mole of $\mathrm{Fe}\left({\mathrm{C}}_2{\mathrm{O}}_4\right)$ is________.

1. $0.2$

2. $0.4$

3. $0.6$

4. $1.67$

Q.

In which of the following options the order of arrangement does not agree with the variation of property indicated against it?

1. B < C < N < 0 (increasing first ionisation enthalpy)

2. I < Br < CI < F (increasing electron gain enthalpy)

3. Li < Na < K < Rb (increasing metallic radius)

4. $A{l}^{3+}<M{g}^2+<N{a}^{+}<F^{-}$ (increasing ionic size).

Q. What is effective nuclear charge and shielding effect?

Q.

Lattice energy of alkali metal chlorides follow the order:

1. LiCl>NaCl>KCl>RbCl>CsCl

2. CsCl>NaCl>KCl>RbCl>LiCl

3. LiCl>CsCl>NaCl>KCl>RbCl

4. NaCl>LiCl>KCl>RbCl>CsCl

Q. In the third period, which is the most metallic and non-metallic element?

Q.

Arrange the following as per the instructions given in the brackets.

$\mathrm{Na},\mathrm{K},\mathrm{Cl},\mathrm{S},\mathrm{Si}$ (increasing order of ionization energy).

Q.

Why is ionization energy positive?

Q.

The order of increasing ionization energy of Mg, Al, Si, and Na is Na < Al < Mg < Si.

1. True
2. False

Q.

The reducing power of element increases by moving down in a group while decreases across a period.

Q.

Why does group 18 have the highest Ionization Energy?

Q. Which amongst these elements has the least metallic character?

1. Sodium
2. Potassium
3. Magnesium
4. Calcium

Q.

The ionization energy of $F^{-}$ is 320 kJ/mole. The electron gain enthalpy of fluorine is:

1. -320 KJ/mole

2. 320 KJ/mole

3. 160 KJ/mole

4. -160 KJ/mole

Q. Explain effective nuclear charge & shielding effect & Factor on which shielding effect depends.

Q.

Can you please differentiate between ionization energy , ionization enthalpy , electron affinity and electron gain enthalpy

Q.

How does the following properties vary in the third period:

1. Atomic size
2. Metallic character
3. Ionisation energy.

Q.

Which one is correct?

Pb(NO3)2----->PbO+2NO2+O2

or

2Pb(NO3)2----->2PbO+4NO2+O2

Q. Why ionisation energy of nitrogen is greater than oxygen

Q. 200g of a sample of limestone liberates 66 g of co2 on heating. The % purity of caco3 in limestone is

Q.

Electronegativity does not depend on the hybridized state.

1. False

2. True

Q.

H2O (g) + C -> CO+ H2

Steam reacts with red hot charcoal to form hydrogen gas& carbon monoxide.My question is why doesn't it form carbon dioxide?

Q.

What is the first ionization energy of a nonmetal?

Q. The second ionization energy is always the first ionization energy.

1. greater than
2. lesser than
3. equal to

Q. In general, ioniation energy increases from left to right across a given period. Aluminum, however, has a lower ionisation energy than magnesium. If true enter 1, else enter 0.

Q. Amongst the elements $B,Al,C$ and $Si$, element having highest first ionization enthalpy is:

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

Q.

mark an element that belongs to d block and have maximum 24 electrons with same spin ? some atomic nos are given below ? (1) 38 (2) 41 (3) 47 (4) 51

Q. State the position of the following in the Periodic Table: [4 MARKS]
(a) Alkali metals
(b) Alkaline earth metals
(c) Iron and zinc
(d) Aluminium

Q. how to predict the position of element in periodic table on the basis ofsuccessive ionisation energy?

Q. 40. Is ionization enthalpy of an atom is equal to electron gain enthalpy of cation, if yes then why?

Q. Three atoms have the following electron configurations respectively:
(i) ${1s}^2{2s}^2{2p}^6{3s}^2{3p}^1$
(ii) ${1s}^2{2s}^2{2p}^6{3s}^2{3p}^5$
(iii) ${1s}^2{2s}^2{2p}^6{3s}^2{3p}^6{4s}^1$
(a) Which of the three has the largest ${\left(IE\right)}_1$?
(b) Which has the largest ${\left(IE\right)}_4$?
Write your answer as a two digit number.
Ex - If answer for a & b is 3 & 2 respectively, answer as 32.

Q. Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.