What is the expected ionic charge of elements in Group 1A (alkali metals) when they form ions?

• A. +2
• B. 0
• C. -1
• D. +1

Answer: (D)

Verified step by step guidance

1. Identify the group of elements in question: Group 1A, also known as alkali metals, which include elements like lithium (Li), sodium (Na), and potassium (K).
2. Recall that alkali metals have one electron in their outermost shell (valence shell).
3. Understand that when these elements form ions, they tend to lose their single valence electron to achieve a stable electron configuration similar to the nearest noble gas.
4. Losing one electron results in a positive charge of +1 because the number of protons (positive charges) exceeds the number of electrons (negative charges) by one.
5. Therefore, the expected ionic charge of Group 1A elements when they form ions is +1.