Shortcut Methods

NEET Numeric Shortcut Methods and Tricks:

1. Electronegativity: Electronegativity generally increase from left to right and decreases from top to bottom within a period or group, respectively.

Ionization energies show an increase from left to right across a period and from top to bottom within a group.

3. Melting Points: Melting point generally increases with an increase in atomic number and molecular mass within a group or period.

4. Boiling Points: Boiling point follows a similar pattern to melting point.

5. Atomic Radii: Atomic radii decrease across a period and increase down a group

**CBSE Board Exam Numericals: ** For calculations, I will use the given values from the NEET Numerics:

1. Electronegativity difference between C and F: EN Difference = EN (F) - EN (C) = 4 - 2.55 = 1.45

2. Ionization energy of B: Ionization energy of Boron (B) = 899 kJ/mol

3. Melting point of Si: Melting point of Silicon (Si) = 1414 °C

4. Boiling point of N₂ in Kelvin: Boiling point of Nitrogen (N) in Kelvin = -195.8 °C + 273 K = 77.2 K

5. Atomic radius of O: 66 pm Atomic radius of Oxygen (O) = 66 pm