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Valence electrons are the number of electrons in the outermost shell of an atom. These are the electrons that will react to form compounds. To determine the number of valence electrons, one must look at the group numbers on the Periodic Table. Group 1A will have 1 valence electron, 2A = 2 valence electrons, 3A = 3 valence electrons, etc. When an atom has reached 8 valence electrons (noble gases), it is no longer reactive. That should help. c:
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoThe elements of group 17 except fluorine have the most number of valence electrons and it is seven.
qwerty3030
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∙ 7y agonoble gases full valence electron shield
silicon (Si)
neon
Wiki User
∙ 13y agoThe number has to be closest to noble gas configuration (ne:10 ar:18 and so on) Atoms lose, gain, or share electrons to have the stable electronic configuration of the noble gases.
Wiki User
∙ 14y ago+1, +2, +3, +4
Wiki User
∙ 13y ago+1 and - 1
Potato Beta
Chlorine
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Explain why lithium and beryllium form ions with different charges?
The number of valences electrons is different.
What charge do all group 7 elements have when they form ions?
The most common valence is 2+ but other valences are also possible.
What kinds of ions do acids and bases form in water?
What kind of ions does a base release in a water solution?
What ions do transitional metals form?
All metals, whether they belong to the transition state or not, will form only positive ions. There are a few metals which are extremely hard to ionize, however, those being the noble metals such as gold and platinum. But if you do manage to ionize them, the ions are positive.
Which elements will form positive ions?
Metals tend to form positive ions.
Explain why lithium and beryllium form ions with different charges?
The number of valences electrons is different.
How many ions in plutonium?
Plutonium has 20 isotopes (from Pu 228 to Pu 247).
What is a technetium ions?
Technetium valences are between -1 and +7; the most usual valences are +3, +4 and +7.
How many ions does polonium?
Valences of polonium are: 2, 4, 6 and -2.
What charge does plutonium have when it forms an ion?
Ions with plutonium have valences between 3 and 7.
What noble gas is least likely to form an ion?
Noble gases' atoms have the least tendency to form ions.
What is the ionic charge in neptunium?
Neptunium atom is neutral; ions of neptunium have valences between 3 and 7.
What affects the chemical behavior of elements?
The chemical behavior of elements is affected by the number and arrangement of electrons in their outermost energy level, known as the valence electrons. Elements with similar valence electron configurations tend to exhibit similar chemical properties. Factors such as atomic size, electronegativity, and ionization energy also play a role in determining the chemical behavior of elements.
What charge do all group 7 elements have when they form ions?
The most common valence is 2+ but other valences are also possible.
Why only carbon shows negative oxidation state in its family?
because the electronegativeties of these elements are low thy don't have much tendency to form negative ions
What kinds of ions do acids and bases form in water?
What kind of ions does a base release in a water solution?
Why are acids deacribed as corrosive?
acids are described corrosive because they have positive hydrogen ions which has the tendency to pull negatively charged ions.
