Question

Define and describe the trends of following atomic properties in modern periodic table

1. Atomic radius

2. Electronegativity

3. Metallic character

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Answer 1

Explanation:

1.The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons

2.Electronegativity, symbolized as χ, is the tendency of an atom to attract shared electrons (or electron density) to itself. An atom's electronegativity is affected by both its atomic number and the distance at which its valence electrons reside from the charged nucleus.

3.Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities.

Answer 2

Answer:

1)atomic radius will decrease moving from left to right and down the group

2)electronegativity increases from left to right and decreases down the group

3)metallic character decreases left to right and increase down the group