How did the work of Dmitri Mendeleev differ?
How did the work of Dmitri Mendeleev differ from that of John Newlands in the development of the periodic table? Mendeleev arranged the elements according to increasing atomic mass. Mendeleev predicted elements that would later be discovered. Mendeleev organized elements into triads based on their properties.
Which Period 4 element has the most metallic properties?
Answer Expert Verified. The answer is (4) Sc. The metallic properties has the rule that from left to right, the metallic property is from high to low.
What is the most non-metallic element in period 2?
fluorine
Which is more non metallic fluorine or neon?
The element that has the highest electronegativity will have the highest reactivity, so fluorine has the highest electronegativity hence, it will be most reactive. So, neon is the noble element therefore, it will be the most non-reactive non-metal.
Which is the most metallic element of the 2nd period a Li B be C B D C?
a)The atomic radius decreases in moving from left to right along a period. This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom. b) most metallic element is Lithium li as we know metallic character decreases as we move from left to right.
Is C bigger or smaller in size than B?
The elements B and C are present in the same period. Since C is placed after B, the size of the element C is less than that of B.
Why Lithium is the most metallic element?
This occurs because lithium has the highest activation energy of its group – that is, it takes more energy to remove lithium’s one valence electron than with other group 1 elements, because lithium’s electron is closer to its nucleus.
How many metals are present in 2nd period of periodic table?
two metals
How many metals are present in second?
What element is in group 17 Period 6?
The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).
What do you mean by Electropositivity?
Electropositivity can be defined as the tendency of an atom to donate electrons and form positively charged cations. This property is primarily exhibited by metallic elements, especially the alkali metals and the alkaline earth metals. Electropositive elements often form ionic salts with electronegative elements.