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Which atoms are most reactive?
The most reactive elements have either 1 valence electron or 7 valence electrons
Why will an alkali metal often combine with a halogen nonmetal to form a compound?
Well, the "happy" number in chemistry is eight. And alkali metals have one valence electron while halogens have seven so when they combine, the combination has eight valence electrons. This means it is full.
What term describes the reactive nonmetals that have seven valence electrons?
alkali earth metals
How can i look at the periodic table and tell how many valence electrons an element has?
The group of the element indicates the amount of valence electrons. For example, the alkali metals have one valence electron and is in group one whilst the halogens have seven valence electrons and are in group seven.
How many electrons on their outer shell does bromine have?
Seven , outer shell electrons or valence electrons increase as you move from left to right on the periodic table not including the transition metals which vary, they start with 1 valence in the alkali earth metals , and finish with 8 valence electrons on the noble gasses (group 18)
How do the chemical properties of the alkali metals and halogens that react to form them?
Alkali metals, like sodium and potassium, have one valence electron and readily lose it to form a +1 cation. Halogens, like chlorine and fluorine, have seven valence electrons and readily gain one electron to form a -1 anion. When alkali metals react with halogens, the alkali metal donates its electron to the halogen, forming an ionic compound.
Does krypton have seven valence electrons?
Krypton has 8 valence electrons.
Does francium have seven valence electrons?
Francium has only one valence electrons.
How many valence electrons does Fluorie have?
Fluorine atom has seven valence electrons.
How many valence electron does chlorine?
The element chlorine has seven electrons in its valence shell.
Which family of elements loses electrons most easily?
The alkali metal group easily lose their outermost electron. This group consists of lithium, sodium, potassium, rubidium, cesium, and francium.
How many valence electrons in chlorine-37?
In every chlorine atom, there are seven valence electrons.
