<span>Methyl groups are electron-donating, so the more CH3 groups attached to the +ve carbon, the more stable the carbocation becomes.</span>
Answer:
lithium is the most reactive alkali metal false as the reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal.
covalent bond is formed due to mutual sharing of electrons true
potassium is most reactive matal in activity series of metals false no lithium is more reactive than potassium
the process in which heat is given on surrounding is exothermic reaction not endothermic reaction
alkyl molecule is formed by removal of one hydrogen atom from alkane molecule true
Explanation:
Nuclear binding energy is the energy that would be required to disassemble the nucleus of an atom into its component parts. These component parts are netrons and protons, which are collectively called nucleons
Osmotic pressure is mathematically expressed as
π = CRT
where, C = concentration of solution
R = gas constant = 0.082 atm mol-1 K-1
T = temperature = 300 K
π = osmotic pressure = 0.55 atm
∴ 0.55 = C X 8.314 X 300
∴C = 0.022 M
Now, conc of solution (in terms of molarity) =

Given: weight of solute = 0.9 g
volume of solution = 100 ml = 0.1 l
∴ 0.022 =

∴ Molecular weight = 4.09 g/mol