All of the halogens . exist under ambient conditions as diatomic gases tend to form positive ions of several different charges tend to form negative ions of several different charges exhibit metallic character form salts with alkali metals with the formula MX

Explanation:

All of the halogens form salts with alkali metals with the formula MX.

Halogens are the members of group 17 in the periodic table. They have seven electron in their valence shell and tend to form negative ion with minus one charge. They get there name  because of their property to form salts. Halogens are very reactive and form salts with the metals.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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