Is oxygen a main group element?
In chemistry and atomic physics, the main group is the group of elements (sometimes called the representative elements) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements.
Is calcium a main group element?
The metals that occur in Groups 1, 2, and 13–15 in the periodic table are called the main-group metals. The alkaline-earth metals—beryllium, magnesium, calcium, strontium, barium, and radium—occur in Group 2 in the periodic table (Figure I. 1).
Is se or O more reactive?
Oxygen, sulfur and selenium are all group 16 elements. So, their electronegativity decreases down the group. Also, nitrogen is less electronegative than oxygen atom. Hence, we can conclude that out of the given options element oxygen is more reactive than the others.
Which element is more reactive K or CA?
increases from left to right so potassium has got greater metallic ch. therefore potassium is a better reducing agent in camparison to calcium. Alkali metals have got the highest reactivity and hence potassium being one has higer reactivity than calcium which is an alkaline earth metal.
How do you know which element is more reactive?
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions .
What metal is the least reactive?
gold
What metal reacts with oxygen but not water?
Less reactive metals react with acids and oxygen, but not water, and include several transition metals such as zinc, iron, and tin.
What metal is less reactive than copper?
Platinum
Which is more reactive Cu or Zn?
Zinc is more reactive than Cu and Fe metal. Iron displaces copper from its solution. Therefore, copper is less reactive than iron. Copper does not displace any metal therefore it is the least reactive.
Why is magnesium more reactive than copper?
Magnesium ribbon placed into copper sulfate solution will result in the formation of a magnesium sulfate solution and the depositing of copper metal. The magnesium displaces the copper as it is a more reactive metal.