Welcome to Chem Zipper.com......: What is atomic volume ? and what is periodicity of atomic volume in groups and periods ?

Search This Blog

Thursday, June 18, 2020

What is atomic volume ? and what is periodicity of atomic volume in groups and periods ?

ATOMIC VOLUME:
Atomic Volume of is define as the volume occupied by one mole of atoms or gram atom of the given element in the solid state .
Thus Atomic volume = atomic weight in gram/ Density in solid state 
(A) In general atomic volume generally leads to higher density as vice versa higher atomic volume generally leads to lower density. 
(B) Trends in group:
When we move from top to bottom in a group the atomic volume generally increases.
(C) Trends in period: 
When we move from move left to right along a period the atomic volume first decrease to minimum at mid period then increases.
Related Questions:

(1) What are the Amphoteric metals ? gives Examples.

(2) Name of total metalloids present in periodic table ?

(3) Total numbers of elements which are liquid at normal temperature is ?

(4) What is Mendeleev's periodic table ? give important features and draw back of Mendeleev's table.

(5) What is atomic density ? give the periodicity of atomic density in periods and groups.

(6) Why there are 2, 8 and 8 elements in first, second and third periodic of periods table respectively ? Explain.

(7) In alkali metal group which is the strongest reducing agent in aqueous solution and why?

(8) The electron affinity of sulphur is greater than oxygen. Why?

(9) The first ionization energy of carbon atom is greater than that of boron atom, whereas reverse is true for the second ionization energy. Explain.

(10) The electronegativities of B, Al, Ga are 2.0, 1.5, 1.6 respectively. The trend is not regular. Explain.

(11) Li2CO3 decomposes on heating but other alkali metal carbonates don’t. Explain.

(12) Of all noble metals, gold has got a relatively high electron affinity. Explain.

(13) Ionization energy of Boron is smaller than Beryllium even though effective nuclear charge is higher?

(14) What are the increasing order of ioni radii of first group elements in water ?

(15) What are the increasing order of molar conductivity of first group elements in water ?

No comments:

Post a Comment