NLN NEX CHEMISTRY 2025 EXAM QUESTIONS & DTAILED CORRECT ANSWERS PASSED ALREADY GRADED A+

NLN NEX CHEMISTRY 2025 EXAM
QUESTIONS & DTAILED CORRECT
ANSWERS PASSED ALREADY GRADED
A+

Quantum Leaps

absorption and emission of quantum energy electrons moving in between orbits by making
jumps




Element

basic type of matter that cannot be broken down further




Atom

smallest unit of an element




Compound

combination of two or more types of elements




Molecule

two or more atoms bonded together

,Proton

found inside nucleus positive charge




Neutron

found inside nucleus no charge




Electron

found outside nucleus negative charge




Orbit

definite path




Orbital

region in space that is drawn to indicate the probability of finding an electron at a specific
location




Principle Quantum Number

indicates the main energy level occupied by the electron and distance orbital is located from the
nucleus

, Principle Quantum Number (n)

indicates energy level of electron describes shell and size of orbital




Subshell Quantum Number (l)

indicates the shape or type of subshell in which an electron is found




Magnum Quantum Number (m1)

describes the orientation of the orbital in space




Spin or Magnetic Quantum Number (ms)

describes direction of the spin of electron in orbital




Atomic Number

the number of protons in the nucleus of an atom




Mass Number

the sum of the number of neutrons and protons in an atomic nucleus




Isotopes

atoms of the same element with different numbers of neutrons