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What do Group 17 halogens form by gaining an electron and forms what?
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∙ 10y ago
negative ions
Wiki User
∙ 10y ago
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When hydrogen reacts with the active metals it forms a chemical bond by?
gaining an electron
Which group of elements reliably forms acids when combined with hydrogen?
Group 17 (7A), the halogens.
Chlorine (Cl) has an atomic number of 17. It often forms an ion by gaining 1 electron. What would its charge be?
-1
What element has -1 as an oxidation number?
The halogens (group 17) have an oxidation number of -1, though the halogens below fluorine can have other oxidation numbers as well. Hydrogen can also have an oxidation number of -1 when it forms hydrides.
What is the electron dot structure for beryllium fluoride?
BeF2 forms, with one beryllium central to the two fluoride ions. each fluorine has seven electrons to start, gaining one electron from beryllium each.
When hydrogen reacts with the active metals it forms a chemical bond by?
gaining an electron
What is the most chemicaly reactive nonmetal element?
The elements in the group 17 are the most reactive non metals. In the group, the reactivity decreases downwards as the ionic radius increases. Therefore fluorine is the most reactive non metal.The halogens are the most reactive non metals. They are in the 17th group of the periodic table. Fluorine is the most reactive non metal.Chlorine is most reactive non metal.It is present in group-17. It forms bonds by gaining one electron.
What is the valance electron for phosphorus?
Phosphorus has 5 valence electron. It forms anion by gaining 3 electrons.
Which group of elements reliably forms acids when combined with hydrogen?
Group 17 (7A), the halogens.
Chlorine (Cl) has an atomic number of 17. It often forms an ion by gaining 1 electron. What would its charge be?
-1
What element has -1 as an oxidation number?
The halogens (group 17) have an oxidation number of -1, though the halogens below fluorine can have other oxidation numbers as well. Hydrogen can also have an oxidation number of -1 when it forms hydrides.
What is the electron dot structure for beryllium fluoride?
BeF2 forms, with one beryllium central to the two fluoride ions. each fluorine has seven electrons to start, gaining one electron from beryllium each.
Chlorine has an atomic number of 17. It often forms an ion by gaining 1 electron. What would its charge be (apex)?
-1 APEX
How many valence electrons are in halogens?
Halogens have 7 valence electrons. Halogens are the group (vertical column) of elements on the periodic table that lie 2nd from the from right side. They sit next to the noble gases, which have 8 valence electrons (except helium, which only has an S shell, and therefore 2 total electrons.) The rule of thumb (which doesn't apply to the transition metals in the middle) is such that every time you move left of the noble gases, you lose 1 valence electron. Halogens, being 1 group to the left, have 7. If you move left again, you reach Oxygen (group 16), which only has 6. Move left again, you have Nitrogen (group 15), which have 5. Left again, you have Carbon (group 14) which has 4, Which is why Carbon almost always forms 4 bonds. You can't generalize about the transition metals, in the middle, but if you go all the way to the Left side of the table, as in group 1, (Na or sodium, K or potassium) you have 1 valence electron. The second column (calcium, Ca, Magnesium, Mg) has 2 valence electrons.
Why does bromine make a -1 ion?
bromine has 17 electrons in the valence shell. by gaining one electron it gets the electronic configuration of the next noble gas. hence it gains one electron and forms -1 ion
What charge do alkali metals form when they react with a halogen?
here r the possisble answers: both atoms lose 1 electron a covalent bond forms metal gains an electron and the nonmetal loses an electron metal loses an electron and non metal gains an electron
What element will have a noble gas configuration if it forms an ionic bond by accepting one electron from a sodium atom?
Every halogen has the capacity to accept one electron from a sodium atom and to thereby achieve a noble gas electron configuration of eight valance electrons. The halogens are fluorine, chlorine, bromine, iodine, and astatine.
