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What stays the same as you move across a period on the periodic table?
The energy of the valence shell remains the same.
Elements across a series have the same number of?
valence electrons, which determine their chemical properties and how they form bonds with other elements. This shared electron configuration gives elements within the same group similar reactivity and properties.
How many Valance electrons in oxygen?
6 Use the periodic table as a guide. As you go across from left to right the number of valence electrons increases. H = 1 Be = 2 B = 3 C = 4 N = 5 O = 6 F = 7 This trend stays the same all the way down each column. Usually periodic tables are marked on the top with roman numerals or something to signify how many valence electrons each element has.
How can the chemical activity of an element be determined from its location in the periodic table?
Elements in the same group, or vertical column, of the periodic table all have the same valence electron configuration, and therefore all have similar reactivity.See the Related Questions to the left for more information.
How does the atomic raduis change across a period of the periodic table?
The atomic radius generally decreases across a period of the periodic table from left to right due to increased nuclear charge pulling electrons closer to the nucleus. This results in a stronger attractive force, leading to a smaller atomic radius.
How does the number of valence electrons change as you go across the 2nd period of the periodic table?
the no. of electrons increses
What do you notice about the number valence electrons?
The number of valence electrons in an atom is often related to its position on the periodic table. Elements in the same group have the same number of valence electrons, which influences their chemical properties and reactivity. Valence electrons are the outermost electrons and play a crucial role in bonding with other atoms.
What happens to valence electrons as you move across the row?
The number of valence electrons remains the same as you move across a row on the periodic table. For example, in row 2 (elements from Li to Ne), all elements have 2 valence electrons. However, the chemical reactivity of these valence electrons can change as you move across the row due to the increasing nuclear charge affecting their interactions with other atoms.
How does the valence electrons increasing?
When moving left to right across a period on the periodic table, the number of valence electrons increases by one with each element. This is because the atomic number increases, resulting in a higher number of electrons in the outermost shell (valence shell).
What stays the same as you move across a period on the periodic table?
The energy of the valence shell remains the same.
What happens to the reactivity of metals from left to right across the perriodic table?
Elements become less reactive as you move from left to right across the periodic table. This is due to how many valence electrons (outer-most electrons) the element has; the less valence electrons, the more reactive the element.
What is the trend of valence electrons across each period?
The number of valence electrons increases as you go across a period. For example in period 2 the number of valence electrons rises from 1 in Li up to 8 in neon.
What happends to the valence electrons is they are moved from left to right in the periodic table?
As you move from left to right across the periodic table, the number of valence electrons increases by one at a time. This increase results in a higher effective nuclear charge, which leads to increased attraction between the nucleus and the electrons. This can affect the reactivity and chemical properties of the elements in that period.
What do you notice about the number of valence electrons as you move from left to right across a periodic table example Na-Ar?
The number of valence electrons increases by one as you move from left to right across a period on the periodic table example Na to Ar. This is because the number of protons increases across the period, leading to an increase in the number of electrons in the outermost energy level.
What element has the fewest valence electrons in period two?
In period two of the periodic table, lithium (Li) has the fewest valence electrons, with only one valence electron. This is characteristic of alkali metals, which are found in group one. As you move across the period, elements gain additional valence electrons, with neon (Ne) having eight.
What do you notice about the number of valence electrons as you move down or up a group or column in the Periodic Table?
The number of Valence electrons of an element is the same number as the element's group number. E.g. Hydrogen is in Group 1. Therefore it has 1 valence electron. Another e.g. Oxygen is in Group 6. Therefore it has 6 valence electrons.
Going vertically across the periodic table is?
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