What is the general trend in the size of atomic radii as the atomic number increases within a group?
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State the trend of atomic size across the period and down the group in the periodic table. Explain your answer.
As you go across a period, electrons are added to the same energy level. At the same time, protons are being added to the nucleus. The concentration of more protons...
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Suggest an explanation for the decreasing solubilities of the sulphates of the Group II elements as the proton (atomic) number of the cation increases. Use a Hess cycle to explain.
This is because there is an increase in the number of protons down the group
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What is the trend for ionic character of the group 2 compounds going down the group?
Can you explain this trend?
In this series, the ionic character of the compounds increases with increasing ionic radius of the metal atom. Electronegativity atoms decreases, and therefore the difference between the electronegativity of the...
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Differentiate between the covalent radii and the ionic radii. Name the cations that are largest single atom cations. Which out of N3– and O2– ion is bigger in size and why?
Answer: The atomic r is the distance from the atomic nucleus 2 th outermost stable e- of a neutral atom. The ionic r is half the distance between 2 gas...
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Electropositivity, density and atomic radii of alkali metals increase down the group. Explain.
With an increase in the element serial number, i.e. by the charge of the nucleus - (the number of protons and electrons) the radius of atoms increases, the density, the...
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What happen to the atomic size if an element or atom when atomic number increases from left to right across the period of a periodic table
The atomic radius of atoms generally decreases from left to right across a period
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Discuss the trend for the atomic radii across the first series of the transition metals
Atomic radii of the first transition series decrease from Sc to Cr, then remains almost constant till Ni and then increases from Cu to Zn. The reason of this variation...
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Compare size of lithium (atomic number=3) and boron ( atomic number=5) which one is larger and which one is smaller
Lithium is larger, boron is smaller. Because increasing atomic number means increasing positive nuclear charge, which attract the external electrons stronger. Since the electrons have the same mean quantum number...
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The elements of period 2 of the periodic table (Li to Ne) show periodic trend in their properties (i) What is meant by the term ‘periodic trend’?
From Li to Ne in the 2nd period there are several properties that is physical (mostly) and also chemical properties varied differently along the period from left to right. The...
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Atomic and ionic radii of the elements of group 16 are smaller than those of the corresponding elements of group 15 and increases down the group. Why?
The atomic radius of group-16 elements or oxygen family are smaller than that of group-15 elements. This is due to increase in the effective nuclear charge from group-15 elements which...
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