19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Increasing order of ionic size for the ions, F–, O₂–, Na⁺, Al³⁺ is (AMU 2009)
Which of the following oxides is most acidic in nature ? (NEET 2018)
For the second period elements the correct increasing order of first ionization enthalpy is (NEET 2019)
Which of the following pairs contain metalloid elements in the periodic table? (Kerala CEE 2017)
The lUPAC name of an element with atomic number 119 is (NEET 2022)
Amongst the following, select the element having highest ionisation enthalpy. (MHT CET 2014)
The stability of +1 oxidation state among Al, Ga, In and TI increases in the sequence (AIPMT 2015)
The electronegativity of the following elements increases in the order [AFMC 2011]
The electronic configuration of an element is 1s ,2s 2p ,3s 3p 3d ,4s 4p 4d ,5s 5p . From which group of the period table, it belongs ? (KCET 2012)
The increasing order of the density of alkali metal is (Kerala CEE 2011)
Identify the wrong statement in the following (AIPMT 2012)
The discovery of which of the following group of elements gave a death blow to Newland’s law of octaves? (Manipal 2008)
Which represents the correct order of the first ionization potential of third-period elements? (AFMC 2009)
Mg and Li are similar in their properties due to (VMMC 2010)
The elements ‘X’, ‘Y’, and ‘Z’ form oxides which are acidic, basic, and amphoteric respectively. The correct order of their electronegativity is
Increase in atomic size down the group is due to (JCECE 2008)
Diagonal relationship is not shown by (BHU 2008)
Which of the following is the second most electronegative element?
Which two elements in the Periodic Table would you expect to combine in the most violent fashion? (Kerala CEE 2008)
The outermost electronic configuration of the most electronegative element is
Element with atomic number 38, belongs to (MP PMT 2008)
Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O? (NEET 2013)
Which of the following has the lowest ionization energy?
Ionisation energy decreases down the group due to
The element with the lowest ionization potential is