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The lustrous non-metal with 7 valence electrons in its outermost shell is iodine (I). It is part of the halogen group in the Periodic Table and is known for its shiny, metallic-gray appearance in solid form. Iodine plays a crucial role in various biological processes and is commonly used in disinfectants and iodized salt.
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What element has the fewest valence electrons in period 2?
In period 2 of the periodic table, lithium (Li) has the fewest valence electrons, with only one valence electron. It is located in Group 1, which is characterized by having a single electron in the outermost shell. Other elements in period 2, such as beryllium and the nonmetals, have more valence electrons.
How many valence electrons are in the outermost energy level of each of the following elements?
To determine the number of valence electrons in the outermost energy level of an element, you can refer to its position in the periodic table. For example, elements in Group 1 have 1 valence electron, Group 2 have 2, and Groups 13-18 have 3 to 8 valence electrons, respectively, with Group 18 (noble gases) having 8 valence electrons. Transition metals and inner transition metals can have varying numbers of valence electrons based on their electron configurations. If you provide specific elements, I can give you the exact number of valence electrons for each.
Atoms of elements in a group on the periodic table have similar chemical properties this similarity is most closely related to the atoms?
having the same number of electrons in their outermost electron shell. This is known as the valence electrons, which dictate the elements' reactivity and chemical behavior. Elements in the same group tend to react in similar ways because they have the same number of valence electrons.
Why are the oxidation numbers of alkali metals always positive?
Alkali metals have a single electron in their outermost shell that is easily lost, resulting in a positive oxidation number. When they lose this electron to form ions, they attain a stable electron configuration, which typically involves having a full valence shell with a noble gas electron configuration.
Why do elements in the same families share all of the same properties?
Elements in the same family share similar properties because they have the same number of electrons in their outermost electron shell. This results in them having similar chemical behavior and reactivity.
What element has the fewest valence electrons in period 2?
In period 2 of the periodic table, lithium (Li) has the fewest valence electrons, with only one valence electron. It is located in Group 1, which is characterized by having a single electron in the outermost shell. Other elements in period 2, such as beryllium and the nonmetals, have more valence electrons.
How many valence electrons are in the outermost energy level of each of the following elements?
To determine the number of valence electrons in the outermost energy level of an element, you can refer to its position in the periodic table. For example, elements in Group 1 have 1 valence electron, Group 2 have 2, and Groups 13-18 have 3 to 8 valence electrons, respectively, with Group 18 (noble gases) having 8 valence electrons. Transition metals and inner transition metals can have varying numbers of valence electrons based on their electron configurations. If you provide specific elements, I can give you the exact number of valence electrons for each.
Which element has the same valence electron configuration as phosphorus?
Pretty much any element in group 15 (N, P, As) will have 2 "s" electrons and 3 "p" electrons in their valence shells, it's just that they will at different energy levels. For example, N is 2s2 2p3 and P is 3s2 3p3.
How many valence electrons does Na have?
One. Sodium is found in Group 1, which is characterized by having one valence electron, so by extension, potassium, rubidium, cesium, and francium also have one valence electron.
How many valence electrons does lithium have?
Lithium has only one valence electron. A valence electron is an unpaired electron available for bonding with other elements. This makes lithium is a highly reactive element that can bond rapidly and often violently with any element having four to seven valence electrons (or with hydrogen).
When an atom gains an electron to create full valence it results in that atom having a net charge of what?
If one electron is gained, then it has a charge of -1.
Explain how valence electrons in an atom are used to form a full outermost energy level?
Atoms form chemical bonds to achieve a full outermost energy level by sharing, gaining, or losing electrons. Valence electrons are the electrons in the outermost energy level of an atom, and having a full outermost energy level makes the atom more stable. This stability is achieved when there are eight electrons in the outermost energy level, known as the octet rule.
What is the general valence shell configuration for the elements in group 7A?
Valence electron configuration in group 7A (halogens): ns2, np5 in which n=2, 3, 4, 5, ... etc. Starting with fluorine, F, electron configuration: (1s2), 2s2 2p5 (non valence electrons in () brackets)
Why are halogens reactive nonmetals?
because of having only one electron in valence shell
What 3 elements have 1 valence electon?
Lithium , sodium and potassium are the three elements having 1 valence electron in their outer shell.
Atoms of elements in a group on the periodic table have similar chemical properties this similarity is most closely related to the atoms?
having the same number of electrons in their outermost electron shell. This is known as the valence electrons, which dictate the elements' reactivity and chemical behavior. Elements in the same group tend to react in similar ways because they have the same number of valence electrons.
Why are the oxidation numbers of alkali metals always positive?
Alkali metals have a single electron in their outermost shell that is easily lost, resulting in a positive oxidation number. When they lose this electron to form ions, they attain a stable electron configuration, which typically involves having a full valence shell with a noble gas electron configuration.
