Chemistry Test - 68

The given compund Li₃PO₄ name is Lithium phosphate.

Lithium phosphate is a white crystal at room temperature. It is slightly soluble in water.

It can be used to produce glass, disk, colorful phosphor powder. It can also be used as a catalyst in some reactions.

Sodium hydroxide - NaOH is caustic soda

Sodium carbonate - Na2CO3 is washing soda

Sodium bicarbonate - NaHCO3 is baking soda

Voltmeter is used to measure Standard Electrode Potential.

Alpha - raysradiations, the most easily stopped by air.

A particle which is similar to electron is beta particle.

The atoms of the elements having same mass number but different atomic number are called Isobars.

The stability of the ions is determined by the energy of the lone pairs. Carbon has the least effective nuclear charge (Zeff) and so the lone pair on the CH3− ion has the highest energy, making it the least stable ion and so the strongest base. The Zeff increases as we move across the period until we get to fluorine which has the greatest Zeff and so its lone pairs have the lowest energy, making F− the least basic ion.

In order of decreasing basicity they are ranked LiCH3 > LiNH2 > LiOH > LiF. We are dealing with the ions F−, OH−, NH2− and CH3− and so the factor which influences their basicity is the stability of the ion compared to its conjugate acid.

The most abundant metal in earth crust isaluminium.

Atomic weight=number of neutrons+number of protons.

The number of neutrons in dipositive Zinc ion is40.