FILL IN THE BLANKS 1. Periodic classification is based on the _________ and __________ properties of the substance. 2. __________ gave the law of octave. 3. The horizontals rows of the table are called _________. 4. The sub-groups containing the typical or normal elements are called _________ sub-group. 5. The 6th period contain _____________ elements. 6. Due to scarcity the inner transitions elements are also called. 7. The elements of group IA are also called ___________.
Ionization energies increases along a period and decreases down the group? Metallic character of elements increases down the group and decreases along a period? The oxidation state of a typical element is directly or indirectly related to the group number to which the elements belongs in the periodic table? The Lattice of SiCl4 consists of discrete molecules which are non-polar? The basicity of main group metal oxides decreases on descending a group in the periodic table? Atomic radii decreases from top to bottom in a group and increases along a period?
Electron affinities generally decreases with increasing atomic number within a period? The seven horizontal rows of the periodic table are called groups? Diamond is a good conductor of electricity and heat? The name Halogens is given to the elements of groups ________ due to salt forming property? In the period iso electronic positive ion shows a decrease in ionic radius from ___________? The elements which exist as gaint covalent structures have very _________ melting points? The sub-groups containing the typical or normal elements are called _________ sub-group? The name “Halogens” is given to the elements of VIIA due to their ________ forming property?