Iam confused what is being asked, can someone give an explanation to what is being asked? part of the reasoning that led van't hoff and le bel to propose a tetrahedral shape for methane, ch4, was based on the number of compounds that are theoretically possible for substituted methanes; that is, compounds in which one or more hydrogens have been replaced by some other group. for example, only one compound of the type ch2x2 has ever been found. is this consistent with a tetrahedral shape? with a square planar shape? provide an explanation for each answer using appropriate diagrams.

explanation: no but i do not usually comment

girl imma just put my comment here because i need a couple point okurrttt

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.