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(a) An element present in period 3 of Group VA: Arsenic (As) – 3s² 3p³(b) An element present in period 2 of Group VIA: Oxygen (O) – 2s² 2p⁴ Related Questions: Write the valence shell electronic configuration for the following groups: Write the valence shell electronic configuration of an element present in the 3rd period … Read more
(a) Alkali metals: ns¹(b) Alkaline earth metals: ns²(c) Noble gases: ns² np⁶(d) Halogens: ns² np⁵ Related Questions: Write the valence shell electronic configuration of the atoms of the following elements: Write the valence shell electronic configuration of an element present in the 3rd period and Group IIA. Arrange the elements in each of the following … Read more
An element in the 3rd period and Group IIA is Magnesium (Mg). Its atomic number is 12, and its electronic configuration is:1s² 2s² 2p⁶ 3s².This indicates that the valence electrons are in the 3s orbital, with two electrons. Related Questions: Define halogens. Which atom has a higher shielding effect, Li or Na? Explain why Na … Read more
(a) Si (Silicon, Atomic Number 14) 1s² 2s² 2p⁶ 3s² 3p² (b) Mg (Magnesium, Atomic Number 12) 1s² 2s² 2p⁶ 3s² (c) Ar (Argon, Atomic Number 18) 1s² 2s² 2p⁶ 3s² 3p⁶ Related Questions: The electronic configurations listed below are incorrect. Explain the mistakes in each and write the correct electronic configurations. Draw Bohr’s Model … Read more