InstaQB

Home
Institutions
- Institutions
  
  Polytechnic Colleges
  
  Medical Colleges
  
  Arts & Science Colleges
  
  Universities
  
  Engineering Colleges
  
  Agricultural Colleges
  
  Research Institute
  
  Law Colleges
  
  Audiology and Speech Colleges
  
  Business & Management colleges
  
  Nursing colleges
  
  Hotel Management institutes
  
  Aeronautical Colleges
  
  Bachelor's Degree
Syllabus
Courses
Stateboard
- 12th Standard English Medium
  
  Maths
  
  Physics
  
  Chemistry
  
  Biology
  
  Computer Science
  
  Business Maths
  
  Economics
  
  Commerce
  
  Accountancy
  
  History
  
  Computer Applications
  
  Computer Technology
  12th Standard Tamil Medium
  
  உயிரியல்
  
  கணினி பயன்பாடுகள்
  
  கணினி அறிவியல்
  
  வணிகக் கணிதம்
  
  வணிகவியல்
  
  பொருளியல்
  
  கணிதவியல்
  
  வேதியியல்
  
  இயற்பியல்
  
  கணினி தொழில்நுட்பம்
  
  வரலாறு
  
  கணக்குப்பதிவியல்
  11th Standard English Medium
  
  Maths
  
  Commerce
  
  Economics
  
  Biology
  
  Business Maths
  
  Accountancy
  
  Computer Science
  
  Physics
  
  Chemistry
  
  Computer Applications
  
  History
  
  Computer Technology
  
  Bio - Zoology
  11th Standard Tamil Medium
  
  கணிதவியல்
  
  உயிரியல்
  
  பொருளியல்
  
  இயற்பியல்
  
  வேதியியல்
  
  வணிகக் கணிதம்
  
  கணினி அறிவியல்
  
  கணக்குப்பதிவியல்
  
  வணிகவியல்
  
  கணினி பயன்பாடுகள்
  10th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  
  9th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  
  8th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
  7th Standard English Medium
  
  Mathematics
  
  Science
  
  Social Science
ICSE/ISC
- Class XII
  
  Mathematics
  
  Physics
  
  Accountancy
  
  Biology
  
  History
  
  Geography
  
  Psychology
  
  chemistry
  
  Economics
  
  Computer Science
  
  Political Science
  
  Business Studies
  Class XI
  
  Accountancy
  
  Chemistry
  
  Mathematics
  
  Biology
  
  Geography
  
  Physics
  
  History
CBSE
- 12Th Standard
  
  Physics
  
  Chemistry
  
  Maths
  
  Biology
  
  History
  
  Economics
  
  Commerce
  
  Geography
  
  Socialogy
  
  Business Studies
  
  Computer Science
  
  Biotechnology Class
  
  Political Science
  
  Home Science
  11Th Standard
  
  Physics
  
  Chemistry
  
  Maths
  
  Biology
  
  History
  
  Economics
  
  Commerce
  
  Socialogy
  
  Business Studies
  
  Geography
  
  Home Science
  
  Computer Science
  
  Biotechnology Class
  
  Political Science
  10Th Standard
  
  Physics
  
  Chemistry
  
  Biology
  
  Mathematics
  
  Economics
  
  Geography
  
  History & Civics
  
  Computer Application
  9Th Standard
  
  Physics
  
  Chemistry
  
  Biology
  
  mathematics
  
  Computer Application
  
  Economics
  
  Geography
  
  History & Civics

11th Chemistry Monthly Test - 2 ( Periodic Classification Of Elements )

MABS Institution

11th Chemistry Monthly Test - 2 ( Periodic Classification Of Elements )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the following statements is incorrect in relation to ionization enthalpy?

Ionization enthalpy increases for each successive electron.
The greatest increase in ionization enthalpy is experienced on removal of electrons from core noble gas configuration.
End of valence electrons is marked by a big jump in ionization enthalpy.
Removal of electron from orbitals bearing lower n value is easier than from orbital having high n value.

The number of elements in the first period of the modern periodic table is _____

2
8
18
32

The size of isoelectronic species- F^-, Ne and Na⁺ is affected by

nuclear charge (Z)
valence principal quantum number (n)
electron-electron interaction in the outer orbitals
none of the factors becausetheir size is the same

The electronic configuration of the atom having maximum difference in first and second ionisation energies is

1s², 2s², 2p⁶, 3s¹
1s², 2s², 2p⁶, 3s²
1s², 2s², 2p⁶, 3s², 3s², 3p⁶, 4s¹
1s², 2s², 2p⁶, 3s², 3p¹

The effective nuclear charge across the period (from left to right)

Decreases
Increases
First decreases and then increases
First increases and then decreases

Match the list-I and list-II using the correct code given below the list.

List-I List-II

A. Alkali metal 1. ns² np^1-6

B. Alkaline earth metals 2. ns¹

C. d-block elements 3. ns²

D. p-block elements 4. (n-1)d^1-10 ns^0-2

A B C D

2 3 4 1
A B C D

3 4 2 1
A B C D

4 2 3 1
A B C D

1 4 2 3

Period of an element is represented by _____ quantum number

Principal
Azimuthal
Magnetic
Spin

Arrange the following ions in order of decreasing ionic radii He, Li²⁺, Be³⁺

He > Li²⁺ > Be³⁺
Li²⁺ > Be³⁺ > He
He > Li²⁺ > Be³⁺
Be³⁺ > Li²⁺ > He

Which of the following orders of ionic radii is correct?

H^- > H⁺ > H
Na⁺ > F^- > O^2-
F > O^2- > Na⁺
None of these

d-block elements form _____ compounds.

ionic
covalent
metallic
both (a) and (b)

Part - B

Generic 2 - Answer All Question

Define electro negativity.

Define valency. How is it determined?

In terms of period and group where would you locate the element with Z = 114

Explain how will you find the atomic number of an element from the frequency of X-rays emitted by an element.

Give Mosley's relationship.

The electron gain enthalpy of chlorine is 348 kJ mol^-1. How much energy in kJ is released when 17.5 g of chlorine is completely converted into Cl^- ions in the gaseous state?

Explain Pauling method of determining electronegativity of element.

Part - C

Generic 3 - Answer All Question

Which of the following species will have the largest and smallest size?

The first ionization enthalpy of magnesium is higher than that of sodium. On the other hand, the second ionization enthalpy of sodium is very much higher than that of magnesium. Explain.

All transition elements are d-block elements, but all d-block elements are not transition elements. Explain.

How is screening effect of inner electrons affect ionization energy?

What is the significance of the terms "isolated gaseous atom" and "ground state" while defining ionisation energy and electron affinity?

Among the second period elements, the actual ionisation energies are in.the order Li < B < Be < C < 0 < N < F < Ne Explain - Why?
(i) Be has higher IE than Boron.
(ii) Oxygen has lower IE than nitrogen and fluorine.

Calculate the screening constants of alkali metals for valency electrons.

Part - D

Generic 5 - Answer All Question

Distinguish between electron affinity and electron negativity.

List out and compare the chemical properties of metals and non-metals.

Explain the diagonal relationship.

What is screening effect? Briefly give the basis for pauling's scale of electronegativity.
(a) State Mendeleev's periodic law.
(b) Describe about the merits of Mendeleev's periodic table.

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

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

Comment

Add Comment

Tamilnadu Stateboardszs - Class