vimala27091981 Asked: January 2023 1.Assertion (A): Second period consists of 8 elements.Reason (R) : Number of elements in each period is four times the number of atomic orbitaksavailable in
vimala27091981 Asked: December 2022 I.1.Assertion and Reason type questions :Assertion (A): Shielding effect increases as we go down the group.Reason (R) : More is the number of electrons in the penultimate shell,
vimala27091981 Asked: December 2022 4.The group number of element in periodic table indicatesa) Valency with respect to hydrogenb) The atomicityc) The number of electrons in the outermost shelld) Oxidation
vimala27091981 Asked: December 2022 Assertion (A): Elements belonging to same group have similar properties.[ ]Reason (R) : SameSame groups after the difference of either 2 or 8 or 18
vimala27091981 Asked: December 2022 a) Both A and R are correct and R is the correct explanation of A.b) Both A and R are correct but R is not the
vimala27091981 Asked: December 2022 7a inner electronsassertion a valence electrons experience less attraction towards the nucleusreason r the nuclear force decreases on valence electrons due to inner
vimala27091981 Asked: December 2022 1.Elements belonging to same group of periodic table have generally the samea) Electronic configurationb) Number of electrons in outermost shellc) Chemical propertiesd)
vimala27091981 Asked: December 2022 8.d) A is incorrect but R is correctStatement (A): Repeating the properties of elements in a regular intervals known as periodicStatement (B)
vimala27091981 Asked: December 2022 31. In the following question, select the number which can be placed at the sign of question mark (2) from thegiven alternatives :2422 511