Question

Q2. Match the following:
Valency
Number of electrons in last orbit
Valency shell
Total number of protons and neutrons in an element
Valency electron
Number of electrons in an atom
Atomic mass number
Second last shell of an element
Atomic number
Number of electrons at atom donates or accepts to
achieve electronic configuration of nearest noble gas
Neucleons
The most energetic shell
Penultimate shell
Neutrons and protons

Answer 1

Answer:

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