The element whose electronic configuration is 1s2, 2s2, 2p6,3s2, 3p6, 3d10 4s2 is a
Correct answer: A. Metal
- A. Metal
- B. Non-metal
- C. Noble gas
- D. Metalloid
Explanation
The electronic configuration given is 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2. It features a completely filled 3d subshell and two electrons in the 4s subshell, which is characteristic of transition metals, specifically zinc (Zn). This is typical of metals due to their tendency to lose electrons and form positive ions. Non-metals generally have higher energy p orbitals, noble gases have completely filled outermost p orbitals, and metalloids have properties between metals and non-metals. Thus, the correct answer is 'Metal'.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.