Periodic table

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Questions

Anonymous

Sodium is soft and aluminium is hard but are in the same period explain?

Daniyal Ahmad

Arrange halogens in order of decreasing size with less or greater sign?

Daniyal Ahmad

Arrange halogens inorder of decreasing size ?

Daniyal Ahmad

Arrange halogens in order of decreasing size with less or bigger sign?

Daniyal Ahmad

Arrange halogens in order of decreasing size?

Daniyal Ahmad

Arrange halogens in decreasing ordee of size with < or > these sign?

Anonymous

Which period do the elements where first ionisation energy takes place?

Anonymous

Why is first ionization energy of nitrogen higher than that of oxygen?

Anonymous

The chemistry of second-period of each group differ in many important respect from that of the heavier member of the group ?What factors are responsible for this anomalous behaviour ?

Ester William

Describe chemical characteristics of group one element with their explanation and examples?

Anonymous

What makes the placement of hydrogen both in group one and group 17 in appropriate?

Anonymous

Why is hydrogen placed in group 1 and other times in group 17?

Anizia

#characteristics of group 1A elements to 2A elements 10 points on each group?

Anonymous

Draw a table showing element, symbols, electronic configuration, atomic structure, ionic structure and electronic configuration of the ion.?

Ndjong Honoré

How to know the period of an element?

Anonymous

Cu in the periodic table?

Anonymous