Sub shell electronic configuration of some elements are given (symbols are not real)
P-1s²2s²2p 3s²3p²
Q-1s²2s²2p 3s²3pº3d³4s²
R-1s²2s²2p 3s¹
S-1s²2s²2p³
a. Which of them is a metal.
b.Which of them is an inert gas.
c. The element that gives coloured compounds.
d. Which of them is a non metal.
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