Select the correct answer. Sodium (Na) and potassium (K) are in the same group in the periodic table. Sodium is in the 11th position. How many valence electrons does potassium have? A. 0 B. 1 C. 9 D. 11
Answer (1)
Respuesta:The correct answer is B. 1.Elements that are in the same group of the periodic table have the same number of valence electrons. Valence electrons are the electrons in the outermost shell of an atom and determine the element's chemical properties.Sodium (Na) and potassium (K) are both in Group 1 of the periodic table, also known as the alkali metals. Elements in Group 1 have one valence electron. Sodium's atomic number is 11, and its electron configuration is 1s²2s²2p⁶3s¹, showing one electron in its outer shell. Similarly, potassium has one valence electron.
