PART - 1 CH - 4 Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below:
Human blood, 7.38

If we get blood red colouration on adding FeSO₄ and dil. H₂SO₄ to the sodium extract, what do you infer about the elements present in organic compound?

Draw the Newman's projection formula of the staggered form of 1, 2-dichloroethane.

Define electronegativity. How does it differ from electron gain enthalpy ?

Using s, p, d notations, describe the orbital with the following quantum numbers.
n = 4; l = 2.

Why staggered and eclipsed forms of carbon cannot be separated at normal temperature?

Why is standard enthalpy of formation of diamond not zero although it is an element?

Why is energy of electron negative?

Write the significance of a plus and a minus sign shown in representing the orbitals.

What is bond angle?