This is called a trivalent metal ion. Examples: Al3+, Fe3+, etc.
Mass number..can be calculated..by the sum of No. of protons and the No. of electrons. And this would give you the the mass number of the element.
An element that tends to give up electrons has a positive oxidation number. This is because when an element loses electrons, it becomes positively charged.
To find the total number of electrons in an element, first you need to look up the element's atomic number. That number tells you how many protons are in the element. Then, look up the net charge of the element. The number of protons subtracted by the elements net charge will give you the number of its electrons.
The most electronegative element is fluoride. The most electropositive element would be Francium however there has never been enough of it collected to perform the measurement on.
An element that is a metal is more likely to give away its electrons because metals tend to lose electrons in chemical reactions to achieve a stable electron configuration. Sodium and potassium are common examples of metals that readily give away electrons.
The smallest particle that has characteristics of that element is the atom. The atom is made up of a certain amount of protons, electrons and (neutrons) and those are what give the characteristics of that element to that atom.
Krypton is element 36 and there are another 10 electrons so it is element 46. So it is Palladium
The symbol "symbol" seems to be a placeholder and does not correspond to a specific element in the periodic table. Each element has a unique number of electrons that is equal to its atomic number. For example, hydrogen has 1 electron, while carbon has 6. If you provide a specific element symbol, I can give you the exact number of electrons.
The Halide gasses (Fluorine, Chlorine, Bromine etc. ) because they only need to gain 1 electron to fill its outermost energy level.
Two electrons in the outer shell of radium.
When we say valence electron we mean the number of electron left it the outermost shell of element, valence electron can be positive of negetive. If an element need much electrons to be octet, that means that the element is not reactive than the one who will give out electrons, the the one who can give electrons much are less reactive than the one who can give a litle and the reaction will be normal as it is soppused to be, Eg lithium and berylium. Lithium is more reactive than berylium because lithuin has 1valence electron while berylium has 2....reactivity goes with the action of valence electron in an element
To be stable it would need to be A2B (2 of element A would give a total of 6 valence electrons + the 1 element B would give a total of 8 electrons in the covalent bond. The bond is now stable and you have a compound.)