JEE

A salt bridge in a galvanic cell maintains electrical neutrality by allowing the ions to flow between the two half-cells. It ensures the continuous flow without participating in the reaction. The salt bridge prevents the charges accumulation as such an accumulation can halt the electrochemical reaction by stopping the flow of electrons.

The Nernst equation in Electrochemistry is important because, under non-standard conditions, it allows us to calculate the electrode potential of the half and full cell. This equation shows how the potential of the cell varies with the temperature, concentration, and pressure. In electrochemical cells, it helps in predicting the spontaneity and direction of redox reactions.

Key dates for JEE Main 2025 Session2 relevant to B.E./B.Tech admission at VVP Engineering College:

• Application opens: February 1, 2025; closes: February 25, 2025 (9 PM)

• Correction window: February 27–28, 2025 (till 11:50 PM)

• Admit cards: issued March 28 (for April 2–4) and April 3 (for April 7–9) 2025

• Exam dates (Paper 1): April 2, 3, 4, 7, 8, 2025 

Xenon form compounds due to the high electronegativity of fluorine and oxygen, low ionization energy compared to lighter noble gases, and the availability of empty d-orbitals. This breaks the old assumption about noble gases being entirely inert.

With the combination of two different halogens, the interhalogen compounds are formed. When compared with pure diatomic halogen molecules, they are more reactive because the bond between different halogens are more polar and weaker. During reactions, it makes them more susceptible to bond cleavage.

Due to their high electronegativity, small atomic size, greater ability to form multiple bonds, and absence of d-orbitals, the first elements of each group behave differently.