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4 public questions tagged with this topic.

अन्तःस्थवर्णानां क्रमः कः ?

English: Antahstha varnas order is ya va ra la, also called semivowels, pronounced with slight contact between articulators. Hindi: अन्तःस्थ वर्णों का क्रम य् व् र् ल् है, इन्हें अर्धस्वर भी कहा जाता है।

Ref: NCERT Sanskrit Class X Chapter Varnavichara explains swara vyanjana uchcharana sthana prayatna grammar rules clearly.

Arrange F, Cl, Br in order of decreasing electron gain enthalpy (most negative to least negative).

Electron gain enthalpy becomes less negative down group 17 due to increasing atomic size. Cl has the most negative value due to optimal nuclear charge and size, followed by F (less negative due to electron repulsion in its compact 2p orbitals), then Br. Order: Cl > F > Br.

Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electron Gain Enthalpy and Electronegativity and Valency