11th Chemistry Monthly Test - 4 ( Periodic Classification Of Elements )

MABS Institution

11th Chemistry Monthly Test - 4 ( Periodic Classification Of Elements )-Aug 2020

Time : 2.00 Hours

Part - A

Generic 5 - Answer All Question

Mention Anomalies of Mendeleev's periodic table.

Explain about the factors that influence the ionization enthalpy.

(a) Define atomic radius.
(b) What are the difficulties in determining atomic radius?

Explain about the structural features of Moseley's long form of periodic table.

How do you classify of elements into blocks? Give their electronic configuration.

I.E increases as we move across the period but Ionisation enthalpies (I.E) of second period of elements in the order.
Li < B < Be < C < O < N < F < Ne
Explain why?
(i) Be has higher I.E and B
(ii) O has lower I.E than N & F

(a) Define ionization energy.
(b) Prove that ionization energy is a periodic property.

Calculate the effective nuclear charge of the last electron in an atom whose configuration is 1s² 2s² 2p⁶ 3s² 3p⁵

Why the first ionisation enthalpy of sodium is lower than that of magnesium while its second ionisation enthalpy is higher than that of magnesium.

Given the bona lengths of H₂, Cl₂, C - C bond in diamond, Si - C bond in carborundum and C - CI bond in CCl₄ are 0.74, 1.9, 1.54, 1.93 and 1.76A respectively, find the covalent radius of hydrogen, chlorine, carbon in diamond, silicon and carbon in CCI₄.

Explain about the anomalies of Mendeleev's periodic table.

Bring out the differences between electro negativity and electron affinity

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11th Chemistry Monthly Test - 4 ( Periodic Classification Of Elements )

MABS Institution

11th Chemistry Monthly Test - 4 ( Periodic Classification Of Elements )-Aug 2020

Part - A

Generic 5 - Answer All Question

Mention Anomalies of Mendeleev's periodic table.

Explain about the factors that influence the ionization enthalpy.

(a) Define atomic radius. (b) What are the difficulties in determining atomic radius?

Explain about the structural features of Moseley's long form of periodic table.

How do you classify of elements into blocks? Give their electronic configuration.

I.E increases as we move across the period but Ionisation enthalpies (I.E) of second period of elements in the order. Li < B < Be < C < O < N < F < Ne Explain why? (i) Be has higher I.E and B (ii) O has lower I.E than N & F

(a) Define ionization energy. (b) Prove that ionization energy is a periodic property.

Calculate the effective nuclear charge of the last electron in an atom whose configuration is 1s2 2s2 2p6 3s2 3p5

Why the first ionisation enthalpy of sodium is lower than that of magnesium while its second ionisation enthalpy is higher than that of magnesium.

Given the bona lengths of H2, Cl2, C - C bond in diamond, Si - C bond in carborundum and C - CI bond in CCl4 are 0.74, 1.9, 1.54, 1.93 and 1.76A respectively, find the covalent radius of hydrogen, chlorine, carbon in diamond, silicon and carbon in CCI4.

Explain about the anomalies of Mendeleev's periodic table.

Bring out the differences between electro negativity and electron affinity

Comment

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(a) Define atomic radius.
(b) What are the difficulties in determining atomic radius?

I.E increases as we move across the period but Ionisation enthalpies (I.E) of second period of elements in the order.
Li < B < Be < C < O < N < F < Ne
Explain why?
(i) Be has higher I.E and B
(ii) O has lower I.E than N & F

(a) Define ionization energy.
(b) Prove that ionization energy is a periodic property.

Calculate the effective nuclear charge of the last electron in an atom whose configuration is 1s² 2s² 2p⁶ 3s² 3p⁵

Given the bona lengths of H₂, Cl₂, C - C bond in diamond, Si - C bond in carborundum and C - CI bond in CCl₄ are 0.74, 1.9, 1.54, 1.93 and 1.76A respectively, find the covalent radius of hydrogen, chlorine, carbon in diamond, silicon and carbon in CCI₄.