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Tetrahedral because there are 4 areas of electron density around the central carbon atom that repel as far away as possible. The bond angle is 109 degrees

Hydrogen bonding is a relatively strong int er -molecular force, caused by strong dipole-dipole interactions between an electron-deficient H atom and a lone pair of electrons on a highly electronegative atom...

Acidic buffer is solution which containing high concentration of weak acid and its conjugate base. Its pH would remain relatively constant when adding small amount of acid or base.i.e. CH 3 COOH = H + + CH 3...

Al has the higher first ionisation energy. Mg electronic configuration is [Ne]3s 2 whereas Al configuration is [Ne]3s 2 3p 1 . To remove the electron from Al, it has to be removed from the 3p orbital, as opp...

Ionisation energy is the energy required to remove one electron from an isolated gaseous atom (in its ground state). This generates a cation (ion with a positive charge). Both Mg and Al are in period three, ...