NDA Atomic Structure, Periodic Table and Bonding questions with solutions
Atoms, periodic properties, noble gases and chemical bonds. 31 questions from our 2016–2025 NDA pattern papers, from the Class 11 Chemistry syllabus. Each has the answer and a full solution.
NDA 2025
- An element has the electronic configuration 2, 8, 7. It belongs to which group of the modern periodic table?
- Atomic radius increases from left to right across a period. 2. Electronegativity increases from left to right across a period.
- An atom has 17 protons and 18 neutrons. After gaining one electron, the mass number and charge of the resulting ion are respectively
NDA 2024
- The number of neutrons in the nucleus of the sodium atom ²³₁₁Na is
- The gas commonly used in discharge tubes for advertising signs, giving a reddish-orange glow, is
- Among the elements Na, Mg, Al and Si of the third period, the one with the largest atomic radius is
- Compounds does NOT conduct electricity in the molten state?
NDA 2023
NDA 2022
- The element whose atom has the electronic configuration 2, 8, 3 has atomic number
- The number of valence electrons in an atom of chlorine (atomic number 17) is
- All elements in the same period of the periodic table have the same number of valence electrons. 2. Elements in the same group show similar chemical…
NDA 2021
- The atomic number of an element whose electronic configuration is 2, 8, 3 is
- Ionic compounds: 1. They generally have high melting points. 2. They conduct electricity in the solid state.
- Isotopes of an element differ in the number of
- Which noble gas is used in discharge tubes to produce a bright red-orange glow in advertising signs?
NDA 2020
NDA 2019
NDA 2018
- The atomic number of an element is equal to the number of protons in its nucleus. 2. The mass number of an atom is the sum of the number of protons…
- Which element is the most electronegative of all?
- An element with atomic number 12 belongs to which group of the periodic table?
- Cathode rays are streams of electrons. 2. The proton was discovered by Chadwick.
NDA 2017
NDA 2016
Other General Knowledge topics
Current Affairs 37Indian Economy 36Constitution and Fundamental Rights 46Parliament, Executive and Judiciary 23Ancient India 36Medieval India 28Freedom Struggle 50Modern India and British Rule 41World Geography 29Indian Geography 81Physical Geography 31Units and Measurements 11Motion, Forces and Gravitation 40Work, Energy and Power 7Fluids and Pressure 10Heat and Thermal Physics 8Sound and Waves 16Light and Optics 37Current Electricity 20Magnetism and Electromagnetic Induction 17Nuclear and Modern Physics 9Acids, Bases and Salts 13Metals, Alloys and Corrosion 20Carbon and Organic Chemistry 22Chemical Reactions 12Mole Concept and States of Matter 13Chemistry in Everyday Life 16Cell Biology and Classification 18Genetics and Heredity 13Plant Physiology 21Nutrition, Diseases and Health 28Human Physiology 62Ecology and Environment 24