Sponsor Area
i) Among the element given below, the element with the least electronegativity is:
a) Lithium
b) Carbon
c) Boron
d) Fluorine
In the given element Lithium is least electronegative.
Sponsor Area
The metals of group 2 from top to bottom are Be,Mg, Ca, Sr and Ba.
1) which one of these elements will form ions most readily and why?
2) state the common feature in the electronic configuration of all these elements.
1 ) Barium will form ions most readily because it is most metallic and ions electrons readily and form a positive ion.
2) All these element have 2 valence electrons.
Arrange the following as per the instructions given in the brackets:
I) Cs, Na, Li,K, Rb (increasing order of metallic character)
Li<Na<K<Cs<Rb
ii) Mg, Cl, Na, S, Si (decreasing order of atomic size)
Na>Mg>Si>S>Cl
Arrange the following as per the instructions given in the brackets:
iii) Na,K,Cl,Si(increasing order of ionization energy)
K<Na<Si<S<Cl
Sponsor Area
Mock Test Series
