Which statement applies to the electron at state 2?

a) it is at a lower energy level than the ground state.
b) it possesses less energy than the ground state.
c) it radiates energy when moved up to state 2.
d) it possesses greater energy than the ground state.

d) It possesses greater energy than the ground state.

Explanation:

As we know that total energy associated with the electron is given by the equation

total potential energy is given as

total kinetic energy of the system is given as

so in terms of total energy when electron moves to higher energy state the total energy will also increase.

So if it jump from this higher energy state to lower state it must radiate the energy

so correct answer would be

d) It possesses greater energy than the ground state.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

. west