valence of lead

Tin and lead (Sn and Pb) belong to group 14 of the periodic table. They have four electrons in their valence shell, their valence shell configuration being ns 2 np 2 . These elements exhibit oxidation states of +2 and +4. The oxidation state +2 is more common be..

Tin and lead (Sn and Pb) belong to group 14 of the periodic table. They have four electrons in their valence shell, their valence shell configuration being ns 2 np 2 . These elements exhibit oxidation states of +2 and +4. The oxidation state +2 is more common because..

. They have four, five, six and seven valence electrons. The elements of group VA, VIA and VIIA can accept 3, 2 or 1 electrons in their valence shell to attain the configuration of nearest noble gas. They become negatively charged i.e. Anion..

. The total energy of the system is equal to the sum of the energies of the two H atoms. When the two atoms approach each other, electrons of one atom attract the nucleus of the other atom. Electrons of both the atoms are attracted by both the nuclei. These attractive interactions lead to..

>Why does the metallic character decrease from left to right across the period, in the periodic table? The elements to the left of the periodic table have a tendency of losing electrons easily as compared to those to the right. As we move from left to right of the period, the electrons of the outer..

. In the VIIIA or zero group, argon does not exhibit either metallic or non-metallic character. Why does the metallic character decrease from left to right across the period, in the periodic table? The elements to the left of the periodic table have a tendency of losing electrons easily as compared..

In diamond, the carbon atoms are arranged tetrahedrally (sp 3 hybridisation of C): each C atom is linked to its neighbors by four single covalent bonds. This leads to a three-dimensional network of covalent bonds...

Chlorine belongs to group VII A. Members of this group are called halogens which means 'salt producers'. Chlorine is a greenish yellow gas. Chlorine has seven electrons in its outer most shell and so has a valency of 1. Like other halogens chlorine is a strong oxidising agent. ..

Oxygen and sulphur belong to group VI A. Oxygen shows a valency of -2, while sulphur shows a valency of -2, +4 and +6. Industrially oxygen is manufactured by fractional distillation of liquid air free of dust particles and CO 2 . Oxides of mercury, silver and lead..

="tblcel">Their densities are usually low. Melting point They usually have a high melting point except mercury, cesium, gallium, tin, lead. Their melting points are low. Boiling point Their boiling points are usually high. Their boiling points are low. Hardness They are usually hard, exce..