Which of the following statements is true about covalent bonds? a) The shared electrons provide both atoms with an octet.
b) Sometimes electrons are gained to provide an atom with an octet.
OC) Hydrogen will share its one electron to obtain an octet
O d) The shared electrons are attracted by the nuclei of both atoms.
e) both a and d.

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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