JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
The correct order of density is
- A \(Be > Mg > Ca > Sr\)
- B \(Sr > Ca > Mg > Be\)
- C \(Sr > Be > Mg > Ca\)
- D \(Be > Sr > Mg > Ca\)
Answer & Solution
Correct Answer
(C) \(Sr > Be > Mg > Ca\)
Step-by-step Solution
Detailed explanation
In \(II'A'\) group density decreases down the group till \(Ca\) and after that it increases.Correct order of density is \(Sr > Be > Mg > Ca\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- What is the major product formed by \(HI\) on reaction with \({image}\)
JEE Mains 2021 Hard - Given below are four compounds:
(a) n-propyl chloride,
(b) iso-propyl chloride,
(c) sec-butyl chloride,
(d) neo-pentyl chloride.
Percentage of carbon in the one which exhibits optical isomerism is:JEE Mains 2026 Medium - Choose the incorrect trend in the atomic radius \((\mathrm{r})\) of the elements :JEE Mains 2025 Easy
- The complex that dissolves in water isJEE Mains 2023 Hard
- Given below are two statements :
Statement I: Presence of large number of unpaired electrons in transition metal atoms results in higher enthalpies of their atomisation.
Statement II: \(d_{xy} = d_{xz} = d_{yz} < d_{x^2-y^2} = d_{z^2}\) and \(d_{x^2-y^2} = d_{z^2} < d_{xy} = d_{xz} = d_{yz}\) are the d-orbital splittings in \([Fe(H_2O)_6]^{3+}\) and \([Ni(Cl)_4]^{2-}\) complex ions respectively.
In the light of the above statements, choose the correct answer from the options given below :JEE Mains 2026 Medium - From the following, how many compounds contain at least one secondary alcohol ?
Choose the correct answer from the options given below :JEE Mains 2026 Easy
More PYQs from JEE Mains
- Two trains ' \(A\) ' and ' \(B\) ' of length ' \(l\) ' and ' \(4 l\) ' are travelling into a tunnel of length ' \(L\) ' in parallel tracks from opposite directions with velocities \(108\,km / h\) and \(72\,km / h\), respectively. If train '\(A\)' takes \(35\,s\) less time than train ' \(B\) ' to cross the tunnel then, length ' \(L\) ' of tunnel is \(...........\,m\) \(\text { (Given } L=60 l \text { ) }\)JEE Mains 2023 Medium
- One half cell in a voltaic cell is constructed by dipping silver rod in \(AgNO_3\) solution of unknown concentration, other half cell is \(Zn\) rod dipped in \(1\) molar solution of \(ZnSO_4\). A voltage of \(1.60\text{ V}\) is measured at \(298\text{ K}\) for this cell. What is the concentration of \(Ag^+\) ions used in terms of \(\log x\) (\(x = [Ag^+]\)) ?
\(E^\circ_{Zn^{2+}/Zn} = -0.76\text{ V}\), \(E^\circ_{Ag^+/Ag} = +0.80\text{ V}\), \(\dfrac{2.303 RT}{F} = 0.059\text{ V}\)JEE Mains 2026 Medium - On heating, lead\((II)\) nitrate gives a brown gas \((A).\) The gas \((A)\) on cooling changes to a colourless solid/liquid \((B).\) \((B)\) on heating with \(NO\) changes to a blue solid \((C).\) The oxidation number of nitrogen in solid \((C)\) is :JEE Mains 2020 Medium
- Imagine that the electron in a hydrogen atom is replaced by a muon \((\mu) .\) The mass of muon particle is \(207\) times that of an electron and charge is equal to the charge of an electron. The ionization potential of this hydrogen atom will be ............. \(eV\)JEE Mains 2021 Hard
- Water drops fall from a tap on the floor, 5 m below, at regular intervals of time, the first drop strikes the floor when the sixth drop begins to fall. The height at which the fourth drop will be from ground, at the instant when the first drop strikes the ground is ___________ m.
\(\left( g =10 m / s ^2\right)\)JEE Mains 2026 Easy - Which one of the following does not have a pyramidal shape?JEE Mains 2014 Hard