Calcium is not a transition metal. It is an Alkaline Earth metal. Not to be confused with Alkali metals, Alkaline Earth metals have two electrons in their outer shell with which they wish to transfer. Most transition metals are elements 21-30, and every row below that.
Calcium
The second most common element in the earth's crust behind oxygen is silicon.
All elements in column 2 of the periodic table consistently form ions with a charge of two plus. This column is commonly referred to as the Alkaline Earth Metals. please feel free to send me a trust point if this was helpful =]
Silicon is the second most abundant element in Earth's crust.
None. The alkaline earth metal isotope with the fewest neutrons would be beryllium-7 with three neutrons and a half-life of 53 days.
beryllium (Be)
Alkaline earth metals
Alkaline earth metals are in the second group. Be is the first metal of them.
The answer your teacher is expecting is "calcium", though your teacher should have worded the question better; there are no alkali metals with 2 valence electrons. Calcium is an alkaline earth.
The element magnesium has four electron energy levels and two electrons in its outer energy level in the neutral atom. Use the link to Wikipedia for more details.
They are in the second group. They all have 2 valence electrons.
They are in the second group. They all have 2 valence electrons.
Cesium is the most alkaline element on earth.
The second family is called Alkaline Earth Metals. They have 2 valence electrons.
The element (neutral atom) with two electrons would be helium, which is a noble gas. I believe the question you are asking is, what element is an alkaline earth metal with 2 valence electrons? The answer to that question is, there are a half dozen of these elements in Group 2A. The two most commonly known elements are magnesium and calcium.
Alkaline earths have 2 valence electrons.