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Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle?Ans) Proton-proton cycle.
If electron falls from n=3 to n= 2 , then emitted energy is: (1) 10.2ev (2) 12.09 ev (3) 1.9ev (4)0
how can i calculate the bidding energy
v CO has same electrons as or the ion that is isoelectronic with co is
what are the equacyions of Dunstan''s test ???
Indicate the nature of bonding in CCl 4 and CaH 2 : (1) Covalent in Ccl 4 and electrovalent in Cah 2 (2) Electrovalent in both CCl and CaH 2 (3) Covalent in bot
classify the reaction.Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g)
what is mole
A reaction among sodium hydroxide and hydrogen chloride gas produces sodium chloride and water and a reaction of 22.85g of sodium hydroxide with 20.82g of hydrogen chloride gives o
examples of oxoacids and their definitions
determine the no of atom in 4.5g of k
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