Which statement describes the number of protons in each atom of an element? (1 point) A. The number of protons is given by the atomic number, which increases by one moving down in its column in
the periodic table.

B. The number of protons is given by the atomic number, which increases by one moving from left to right across
each row of the periodic table.

C. The number of protons is given by the mass number, which increases by one moving down in its column in
the periodic table.

D. The number of protons is given by the mass number, which increases by one moving from left to right across each row of the periodic table

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.

answer seismograph;

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.