Which of these periods contain elements with electrons s, p,d and f orbitals? periods 1-3 periods 1-4
periods 3-5
periods 6-7

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Aseasonal prevailing wind in the region of south and southeast asia, blowing from the southwest between may and september and bringing rain (the wet monsoon ), or from the northeast between october and april (the dry monsoon ).

Answer//the law of conservation of mass.;