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Across the periodic table do the elements become more or less metallic?
in groups, as we go down metallic characteristics increases but in periods as we go left to right metallic characters decreases because non-metals are being introduced. i hope it helped!
Why francium is less metallic than caesium?
'Less metallic'? They are both metals.
Do elements become more metallic when you go down groups?
an element becomes more metallic as you travel down a group. it becomes less metallic as you travel from left to right across a period.
Why is uranium less reactive than sodium?
The electronegativity of sodium is 0,93.The electronegativity of uranium is 1,38.A lower electronegativity is the meaning of more chemical reactivity.
Do elements become more or less metalic as you go down a group?
Elements tend to become more metallic as you go down a group. This is because as you move down a group, the number of electron shells increases, resulting in weaker attraction between the nucleus and the outermost electrons, making it easier for the atoms to lose electrons and show metallic properties.
Do nonmetals become more reactive when moving top to bottom?
No, non metals do not become reactive from top to bottom.They become less reactive.
What conclusion can be drawn about the relationship between the arrangements of elements on the periodic table and the patterns observed in there properties?
The arrangement of elements on the periodic table reflects their atomic structure and properties, with elements grouped by similar chemical behaviors and characteristics. This organization reveals periodic trends, such as electronegativity, atomic radius, and ionization energy, which vary systematically across periods and groups. As you move from left to right, elements typically become less metallic and more non-metallic, with increasing electronegativity. Therefore, the periodic table serves as a valuable tool for predicting and understanding the chemical properties of elements based on their positions.
As you go down a group the elements generally become more or less metallic?
As you go down a group on the periodic table, elements generally become more metallic. This is because the number of electron shells increases down the group, leading to greater distance between the nucleus and the outer electrons. As a result, the outer electrons are less strongly attracted to the nucleus, making the elements more metallic.
How do some atoms in covalent bonds become slighty positive or slightly negative?
When the difference of the electronegativity between the atoms is significant the molecule is less or more polar.
Does group 1 element become less metallic as atomic number increases?
No, group 1 elements become more metallic as atomic number increases. This is because as you move down the group, the number of electron shells increases, leading to greater shielding of the valence electrons and a decrease in effective nuclear charge, which promotes metallic behavior.
How is electronegativity used to determine bond types?
Electronegativity is used to determine bond types by comparing the difference in electronegativity values of the atoms involved. When the electronegativity difference is large (greater than 1.7), an ionic bond is formed. When the difference is moderate (between 0.3 and 1.7), a polar covalent bond is formed. When the electronegativity difference is small (less than 0.3), a nonpolar covalent bond is formed.
What best describes an atom with low electronegativity?
Electronegativity is the ability of an atom to attract towards it the electron pair of a covalent bond. An atom with low electronegativity is poor at doing this. For instance, the electronegativity of bromine is less than that of chlorine.
