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'.
Last updated
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.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2. Law of octaves was proposed by
7th period of the periodic table contains normal elements:
(A), (B) and (C) are elements in the third period. The oxide of(A) is ionic, that of (B) is amphoteric and that of (C) is a giant molecule (covalent network). (A), (B) and (C) have atomic numbers in the order:
(A), (B) and (C) are elements in the third short period. Oxide of (A) is ionic, that of (B) is amphoteric and of (C) a giant molecule. (A), (B) and (C) have atomic numbers in the order of:
A gas that reacts with CaO and not with NaHCO3 is: