19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
La (Lanthanum) having atomic number 57 is a member of:
The statement that is not correct for periodic classification of elements is:
The period number in the long form of the periodic table is equal to
The lUPAC name of an element with atomic number 119 is (NEET 2022)
Identify the incorrect match. (NEET 2020) Name IUPAC Official Name
For the second period elements the correct increasing order of first ionization enthalpy is (NEET 2019)
Which of the following oxides is most acidic in nature ? (NEET 2018)
In which of the following options, the order of arrangements does not agree with the variation of the property indicated against it? (NEET 2016) (a) Al Mg Na F (increasing ionic size)
The species Ar, K and Ca contain the same number of electrons. In which order do their radii increase? (AIPMT 2015) (a) Ca Ar K (b) Ca K Ar (c) K Ar Ca (d) Ar K Ca
The stability of +1 oxidation state among Al, Ga, In and TI increases in the sequence (AIPMT 2015)
Which of the following orders of ionic radii is correctly represented? [AIPMT 2014]
Amongst the following, select the element having highest ionisation enthalpy. (MHT CET 2014)
The compound not acting as a reducing agent is (Manipal 2014)
The correct order of decreasing first ionisation potential is (UP CPMT 2013)
The elements ‘X’, ‘Y’, and ‘Z’ form oxides which are acidic, basic, and amphoteric respectively. The correct order of their electronegativity is
Identify the wrong statement in the following (AIPMT 2012)
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 correct order of decreasing electronegativity values among the elements I-beryllium, II-oxygen, III-nitrogen and IV-magnesium, is (Kerala CEE 2011)
Which of the following has the highest electron affinity? (AFMC 2011)
The electronegativity of the following elements increases in the order [AFMC 2011]
Electronic configuration of an element X having atomic number 24 is (UP CPMT 2010)
Mg and Li are similar in their properties due to (VMMC 2010)
Ease of formation of the cation is favoured by (RPMT 2010)
Which one of the following is correct order of the size? (Haryana PMT 2010)
The element with atomic number 117 has not been discovered yet. In which family would you place this element if discovered? [Kerala CEE 2009]