Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Education Advanced…

1. Hydrogen forms compounds with most non-metallic elements and with some metals. (a) Calculate the empirical formula of the compound used in the manufacture of artificial…

1. (a) (i) Define the terms: atomic number ............................................................................................... ......................................................................................................................…

Group 14 Element symbol Electron configuration Nature Carbon Silicon Germanium Tin Lead C Si Ge Sn Pb 2.4 [He]2s22p2 2.8.4 [Ne]3s23p2 2.8.18.4 [Ar]3d104s2 4p2 2.8.18.18.4…

Slide 1Periodic Trends in Ionisation Energies and Covalent Radii Trends in the Periodic Table and Bonding Slide 2 Covalent Radii of Elements The size of an atom is measured…

Slide 1Atomic Structure Slide 2 Simple model of an atom An atom is made of a tiny nucleus with electrons orbiting around it. The nucleus is made up of protons and neutrons.…

1.PERIODIC TABLE2. Periodicity Recurrence of similar properties of elements at a regular intervals is called periodicity. Some of the properties that show periodic variation…

1) Atoms, Molecules and Stoichiometry Q. 150cm 3 of oxygen were added to 20cm 3 of a gaseous hydrocarbon D. After explosion and cooling, the gaseous mixture occupied 130cm…

Ambedkar Nagar Prime Classes for IIT-JEE/PMT, Ambedkar nagar 1. Calculate the wavelength of light radiation that would be emitted, when an electron in the fourth Bohr’s…

1. PRE-UNIVERSITY SEMESTER 2 CHEMISTRY CHAPTER 4 : GROUP 2 2. 4.1 Physical Properties of Group 2  Group 2 are also known as alkali earth metal. The elements of Group 2…