The most important classification of elements is that of non-metallic versus metallic. Metallic elements form solids that are good conductors of electricity, and where bonding is not strongly directional and have structures with many near neighbors. Non-metallic elements form molecules or covalent solids, which are usually poor conductors of electricity and where bonding is markedly directional in character. This distinction on the basis of physical properties. All elements of the d, s and f blocks are metallic (except hydrogen), non-metallic ones being confined to hydrogen and to the upper right-hand part of the p block.   Posted Date: 7/21/2012 8:45:00 AM | Location : United States

Ask an Expert

Your posts are moderated

Write your message here..

Related Questions

Spectral lines are possible in its emission spectrum, If hydrogen atom is i... If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Solution) There is a formula for this i.e  [ (n 2 - n 1

The electrons in different shells, Which of the following explains the sequ... Which of the following explains the sequence of filling the electrons in different shells: (1)  Hund's rule (2) Octet rule (3) Aufbau principle (4) All of these Ans

Dalton''s law of partial pressures, can you give me a sample problem of tha... can you give me a sample problem of that topic and the answer step by step

Water soluble vitamins permits water solubility, What property command to w... What property command to water soluble vitamins permits water solubility Ans) Because of 1]OH bond between them 2] polar componets 3] Availibility of in nature

When cyclohexane is poured on water , Name: Cyclohexane Formula: C6H12 Mol... Name: Cyclohexane Formula: C6H12 Molar mass: 84.16 g/mol Density: 779.00 kg/m³ As it''s density is less than that of water, it floats on water rather than sinking.

Explain the illustration of mixture experiment, Strategy 2 The wheat f... Strategy 2 The wheat flour amount is fixed at 3940g, but that of the active ingredients is varied from 30 to 60 g with the ratio of A : B : C fixed at 3:2:1. The combinations

Calculate the activity of nuclides, Calculate the activity of nuclides: ... Calculate the activity of nuclides: Problem: 100 mg piece of a gold ornament containing 10% copper as impurity was irradiated with thermal neutrons at 2.1×10 11 n/cm 2

Organic chemistry, synthesis of di and tri substituted benzenes(symmetrical... synthesis of di and tri substituted benzenes(symmetrical tribromo benzene, 2-amino-5methylphenol, 3-nitro-4-bromobenzoic acid, 3,4-dibromonitrobenzene, 1,2,3-trimethyl benzene) sta

Carbenes, explain the difference between singlet and triplet carbenes, demo... explain the difference between singlet and triplet carbenes, demonstrate with examples

Explain relative electronegativities, Explain relative electronegativities ... Explain relative electronegativities An analysis of relative electronegativities would suggest that, because C is slightly more electronegative than H, a important amount of th