The correct order of density is
- $Be > Mg > Ca > Sr$
- $Sr > Ca > Mg > Be$
- $Sr > Be > Mg > Ca$
- $Be > Sr > Mg > Ca$
The Correct Option is C
Solution and Explanation
Top Questions on GROUP 2 ELEMENTS
- Reaction of \(BeCl_2\) with \(LiAlH_4\) gives :
- \(AlCl_3\)
- \(BeH_2\)
- \(LiH\)
- \(LiCl\)
- \(BeAlH_4\)
- JEE Main - 2022
- Chemistry
- GROUP 2 ELEMENTS
- Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?
- JEE Main - 2022
- Chemistry
- GROUP 2 ELEMENTS
- The structures of beryllium chloride in solid state and vapour phase, are :
- NEET (UG) - 2021
- Chemistry
- GROUP 2 ELEMENTS
- What is the role of gypsum, $CaSO_{4}.2H_{2}O$ in setting of cement ? Identify the correct option from the following :
- NEET (UG) - 2020
- Chemistry
- GROUP 2 ELEMENTS
- Aqueous solution of a salt $(A)$ forms a dense white precipitate with $BaCl_2$ solution. The precipitate dissolves in dilute $HCl$ to produce a gas $(B)$ which decolourises acidified $KMnO_4$ solution $A$ and $B$ respectively are :
- KCET - 2020
- Chemistry
- GROUP 2 ELEMENTS
Questions Asked in JEE Main exam
- A closed organ and an open organ tube filled by two different gases having the same bulk modulus but different densities \( \rho_1 \) and \( \rho_2 \), respectively. The frequency of the 9th harmonic of the closed tube is identical with the 4th harmonic of the open tube. If the length of the closed tube is 10 cm and the density ratio of the gases is \( \rho_1 : \rho_2 = 1 : 16 \), then the length of the open tube is:
A sub-atomic particle of mass \( 10^{-30} \) kg is moving with a velocity of \( 2.21 \times 10^6 \) m/s. Under the matter wave consideration, the particle will behave closely like (h = \( 6.63 \times 10^{-34} \) J.s)
- Displacement of a wave is expressed as $$ x(t) = 5 \cos \left( 628t + \frac{\pi}{2} \right) \, \text{m}. $$ The wavelength of the wave when its velocity is 300 m/s is:
The displacement $ x $ versus time graph is shown below.
The displacement $ x $ is plotted against time $ t $. Choose the correct answer from the options given below:- A light wave is propagating with plane wave fronts of the type \( x + y + z = \text{constant} \). The angle made by the direction of wave propagation with the \( x \)-axis is:
Concepts Used:
Group 2 Elements
The group two or alkaline earth metals are s-block elements with two electrons in their s-orbital. They are alkaline earth metals. They are named so because of the alkaline nature of the hydroxides and oxides.
Alkaline earth metals are characterized by two s-electrons. This group of elements includes:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)
Elements whose atoms have their s-subshell filled with their two valence electrons are called alkaline earth metals. Their general electronic configuration is [Noble gas] ns2. They occupy the second column of the periodic table and so-called as group two metals also.