19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The lUPAC name of an element with atomic number 119 is (NEET 2022)
Identify the incorrect match. (NEET 2020) Name IUPAC Official Name
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 arrangement for the ions in the increasing order of their radius is (KCET 2014) (a) Na ,Cl ,Ca (b) Ca ,K ,S (c) Na ,Al ,Be (d) Cl ,F ,S
Which one of the following is the correct order of the size of the ions? (EAMCET 2014) (a) Na Mg F O (b) O F Na Mg (c) Mg Na F O (d) O F Mg Na
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)
The electron affinity of Be is similar to (UP CPMT 2013)
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]
The increasing order of the density of alkali metal is (Kerala CEE 2011)
The correct order of the decreasing ionic radii among the following isoelectronic species is (CBSE AIPMT 2010)
The element with the electronic configuration as [Ar]3d10 4s2 4p3 represents a (JCECE 2010)
Among the following the third ionization energy is highest for (AMU 2010)
Generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exception is (KCET 2010)
The property of attracting electrons by the halogen atoms in a molecule is called (JCECE 2010)
Which one of the following ions has electronic configuration Ar 3d ? (Atomic numbers: Mn = 25, Fe = 26, Co = 27, Ni = 28) (CBSE AIPMT 2010) (a) Co (b) Ni (c) Mn (d) Fe
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)