Question
Explain the formation of covalent bond in $H_2$ molecule.
✓
Answer
Formation of $H_2$ molecule:
$i.$ The electronic configuration of $H$ atom is $1s^1.$
$ii.$ It needs one more electron to complete its valence shell.
$iii.$ When two hydrogen atoms approach each other at a certain internuclear distance, they share their valence electrons.
$iv.$ The shared pair of electrons belongs equally to both the hydrogen atoms. The two atoms are said to be linked by a single covalent bond and a $H_2$ molecule is formed.
$i.$ The electronic configuration of $H$ atom is $1s^1.$
$ii.$ It needs one more electron to complete its valence shell.
$iii.$ When two hydrogen atoms approach each other at a certain internuclear distance, they share their valence electrons.
$iv.$ The shared pair of electrons belongs equally to both the hydrogen atoms. The two atoms are said to be linked by a single covalent bond and a $H_2$ molecule is formed.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the structural formulae for the following names and also write correct IUPAC names for them.
a. 5-ethyl-3-methylheptane
b. 2,4,5-trimethylthexane
c. 2,2,3-trimethylpentan-4-01
a. 5-ethyl-3-methylheptane
b. 2,4,5-trimethylthexane
c. 2,2,3-trimethylpentan-4-01
Calculate the volume of $1$ mole of a gas at exactly $20 ^\circ C$ at a pressure of $101.35$ kPa.
→Draw the flowchart showing the manufacture of NH3 by Haber process.
Explain isomerism with structure in the product obtained by acid catalysed dehydration of pentan-2-ol.
i. Explain the role of catalytic converters in automobile exhaust.
ii. Why do automobiles with catalytic converter require unleaded petrol?
ii. Why do automobiles with catalytic converter require unleaded petrol?
Explain the effect of change in temperature on the following equilibria:
$CO _{( g )}+2 H _{2( g )} \rightleftharpoons CH _3 OH _{( g )} ; \Delta H =-90 kJ$
→$CO _{( g )}+2 H _{2( g )} \rightleftharpoons CH _3 OH _{( g )} ; \Delta H =-90 kJ$
Perform following calculations and express results in scientific notations $($exponential notations$),$
$i. \ (1.5 \times 10^{-6}) – (5.8 \times 10^{-7})$
$ii. \ (9.8 \times 10^{-3}) – (8.8 \times 10^{-3})$
$iii. \ (6.5 \times 10^{-8}) – (5.5 \times 10^{-9})$
→$i. \ (1.5 \times 10^{-6}) – (5.8 \times 10^{-7})$
$ii. \ (9.8 \times 10^{-3}) – (8.8 \times 10^{-3})$
$iii. \ (6.5 \times 10^{-8}) – (5.5 \times 10^{-9})$
What is the stationary phase in Paper Chromatography?
Give reason: Dalton’s atomic theory explains the law of multiple proportion.
Distinguish between the following : Adsorption and absorption. Give one example.