The sum of the percentage abundance of these two isotopes of the new synthetic element should be equal to 100. If we let x be the percent abundance of the second isotope, we have the equation, 43 + x = 100The value of x = 57
H2Se is the acid as it is donating H+ to H2O and forming SeH- (which is conjugate base).
H2O is the base since it’s receiving H+ from H2Se to form H3O+ (which is the conjugate acid)
Se is in the same group as O but is in different period which means Se has higher radius compred to O. this led to H-O bond being stronger than H-Se bond and H-Se bond which in turn makes it easier for H2Se to donate H to H2O
True:
The result is two genetically identical daughter nuclei.
B
A mixture can be separated by a physical means because there is no chemical bond between the constituents
In Thompson's model, an atom is made of protons and electrons. Protons carry simplest positive charge, while electrons carry simplest negative charge thus being the simplest negative particle in an atom.