Which of the following statements is incorrec | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Statement $A$ is incorrect. In a period,density generally increases with atomic number,but down a group,density increases because the increase in

Vedclass · Accepted Answer

Density increases across a period and decreases down a group as atomic number increases.

Vedclass · Answer

(A) Statement $A$ is incorrect. In a period,density generally increases with atomic number,but down a group,density increases because the increase in atomic mass is more significant than the increase in atomic volume. Statement $B$ is correct; ionization energy depends on the penetration effect of orbitals $(s > p > d > f)$. Statement $C$ is correct; electron gain enthalpy generally becomes less negative (decreases) down a group. Statement $D$ is correct; diagonal relationship explains the similarity in properties like charge-to-size ratio between elements of the second and third periods.

List-$I$ (Elements)	List-$II$ (Properties)
$A. Cl, S$	$I. \text{Elements with highest electronegativity}$
$B. Ge, As$	$II. \text{Elements with largest atomic size}$
$C. Fr, Ra$	$III. \text{Elements which show properties of both metals and non-metals}$
$D. F, O$	$IV. \text{Elements with highest negative electron gain enthalpy}$

Which of the following statements is incorrect?

Similar Questions

Which one of the following sets of ions represents a collection of isoelectronic species?

What is meant by diagonal relationship?

Which of the following statements is correct regarding the following processes?
$(i) \, Cl$ $\xrightarrow{E.A.} Cl^{-} \, \, \, \, \, (ii) \, Cl^{-}$ $\xrightarrow{I.E.} Cl \, \, \, (iii) \, \, Cl$ $\xrightarrow{I.E.} Cl^{+} \, \, \, (iv) \, \, Cl^{+}$ $\xrightarrow{I.E.} Cl^{2+}$

Which of the following order$(s)$ is/are correct?
$(1) Li < Be < B < C$ $(IE_1)$
$(2) Li < Na < K < Rb < Cs$ (Reducing power in gaseous state)
$(3) Li^{+} < Na^{+} < K^{+} < Rb^{+} < Cs^{+}$ (Ionic mobility in aqueous solution)
$(4) S > Se > Te > O$ $(EA)$

Vedclass Test Series

Exam Paper Generator

Online Exam Module