what is the valency of hydrogen,potassium and calcium?

a list of oxides isgiven: CO2, N₂O_5, Na₂O, N₂ O

state

1.The oxide which dissolves in water to form a strongly alkaline solution

2. The acid anhydride of nitric acid

3. The neutral oxide

4. The anhydride of carbonic acid

5. The two oxides that react to form a salt

What is meant by 'negative particles radiate energy when they radiate accelerate' ?

Why don't electrons radiate energy as they revolve around the nucleus, give out all of their energy and spiral into the nucleus ?

thank u.i understood.

why does the e/m ratio of a proton differ from gas to gas,but whereas not for an electron?

What is the nature of charge on cathode rays?

State one drawback of Rutherford's model.

CAN you please explain me the meaning of indications?

How does cathode rays differ from anode rays?

State two observations which show that atom is not indivisible.

Hello, m Jasmine Sarkar.What is the name of Bohr's atomic model?

Hello, m JASMINE SARKAR. Can u please explain me the meaning of valancy?

Hello, I am Jasmine Sarkar.Can you please explain the meaning of EMBEDDED 

how much time does uraniam 235 atom takes to stablize itself?

what is ionic linkage