Answer : The correct location on the periodic table of two elements have similar characteristics is, two elements present in the second column of the left side
Explanation :
The elements have similar characteristics when they are belong to the same family or group this means that when they are placed in the same column of the periodic table.
The elements of similar characteristics have same number of valence electrons.
In the given periodic table of the elements, the two elements present in the second column of the left side have similar characteristics because these two elements belong to the same family or group. While the other elements have different characteristics.
It is known that atoms that have same number of valence electrons will show similar chemical properties.
So, when we move from left to right across a period there occurs increase in number of valence electrons of each element. But when we move down a group then number of valence electrons remain the same.
Hence, elements of same group will show similar chemical properties.
Therefore, we can conclude that elements marked as 2 and 3 will have similar chemical properties.
Answer:34.55 explanation:number of neutrons=mass number-atomic number the mass number for copper is 63.55 so you do 63.55-29 (29 is the atomic number) and you would get 34.55
Imine can be isolated from the reaction mixture as water is continuously removed from the reaction chamber
Explanation:
In this reaction, a non -aqueous solvent is not used (not mentioned in the question). Thus, we can say that there is continuous removal water under suitable reacting conditions and hence the imine formed is left behind.
