Which of the following noble gases has the highest positive electron gain enthalpy value? (a) Helium

Chlorine has the highest value of electron gain enthalpy

Ionization enthalpy is the energy required to remove an electron from an isolated gaseous atom in its ground state. Although the atoms are widely separated in the gaseous state, there...

[Hint : (i) Due to their electron conflguration. (ii) Due to its less solubility in blood. (iii) Due to its high ionization enthalpy.]

(i) Different elements discovered in different times were found to possess different physical and chemical properties. But, it was difficult to study all the information or properties of these elements....

(c) Assertion is correct, reason is incorrect 

(i) This is due to smaller size of oxygen the electron cloud is distributed over a small region of space, making electron density high which repels the incoming electrons. (ii) Because...

Second electron affinity of O is largely +ve because of repulsion between negatively charged ions and second electron to be added. Energy required to overcome repulsion is more than the...

(a). I<Br<F<Cl (b). Na<Al<Mg<Si (c). C<N<F<O.

(a). The element chlorine (Cl) has the highest negative electron gain enthalpy.  (b). The element cesium (Cs) has lowest ionization enthalpy.  (c). The element fluorine F has lowest atomic radius.  (d). The element...

(c) Correct Statement :Helium is the smallest inert gas.