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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.
What happens to the characteristics of atoms in a period as you go across a period?
As you move across a period in the periodic table, the atomic number increases, leading to a greater positive charge in the nucleus. This results in stronger attraction between the nucleus and the electrons, causing a decrease in atomic radius. Additionally, elements generally become less metallic and more non-metallic, with increasing electronegativity and ionization energy as you progress from left to right across the period.
What do the periods tell us about the elements?
The periods in the periodic table indicate the energy levels of the electrons in an atom. Elements in the same period have the same number of electron shells, which influences their chemical properties and reactivity. As you move from left to right across a period, the atomic number increases, and elements typically become less metallic and more non-metallic. This trend affects their electronegativity, ionization energy, and overall behavior in chemical reactions.
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.
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.
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.
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.
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.
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.
