Practice free Chemistry NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which groups of elements are called d-block elements in modern periodic table ?
The d-block elements are found in groups 3 to 12 in the modern periodic table. These elements are also known as transition metals and they are characterized by the filling of d-orbitals. The d-block includes elements like iron (Fe), copper (Cu), and zinc (Zn).
Which block elements are more electropositive in modern periodic table ?
The s-block elements are more electropositive in the modern periodic table. Electropositivity refers to the ability of an element to donate electrons and form positive ions. The s-block includes the alkali metals (Group 1) and alkaline earth metals (Group 2), which are highly electropositive elements. For example, sodium (Na) and magnesium (Mg) are part of the s-block and are known for their high electropositivity.
Which block elements are less electropositive in modern periodic table ?
The p-block elements are less electropositive in the modern periodic table. Elements in the p-block include groups 13 to 18 and are characterized by the filling of p-orbitals. These elements have higher electronegativities compared to s-block elements. For example, fluorine (F) and oxygen (O) are part of the p-block and are known for their high electronegativity, meaning they are less likely to lose electrons and form positive ions.
Which elements transist between more electropositive and less electropositive elements ?
The d-block elements, also known as transition metals, typically exhibit a transition between more electropositive and less electropositive elements. This is due to their position in the periodic table where they lie between the s-block (more electropositive) and the p-block (less electropositive) elements.
In modern periodic table, by which name d-block elements are known ?
In the modern periodic table, the d-block elements are known as transition elements. These elements are characterized by having partially filled d orbitals and are located in groups 3 to 12.
Which of the following is an electronic configuration at Th ?
By which reason, element -Th is introduce in f-block ?
When d-block elements are consider as d-block elements ?
Which of the following is general electron configuration of transition elements ?
The general electron configuration of transition elements is \( (n – 1)d^{1-10} ns^{1-2} \\). This configuration indicates that the d-orbital can have 1 to 10 electrons and the s-orbital can have 1 to 2 electrons.
Which of the following is an electron configuration of Cr ?
The correct electron configuration of Chromium (Cr) is $ [Ar] 3d^5 4s^1 $. This is because Chromium has an exceptional electronic configuration to achieve a more stable half-filled d-subshell. Normally, we would expect $ [Ar] 3d^4 4s^2 $, but one electron from the 4s orbital is promoted to the 3d orbital to give it a half-filled d-shell, which is particularly stable.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Chemistry question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.