CBSE Class 12 p-Block Elements — practice questions
32 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 p-Block Elements in the app →Silver ($Z = 47$) has a fully-filled $4d^{10}$ configuration in its ground state. Despite this, it is still clAmong the 3d-series transition metals, the element that exhibits the largest number of oxidation states is:The 'spin only' magnetic moment $\mu$ (in Bohr magnetons) of a transition metal ion with $n$ unpaired d-electrThe spin-only magnetic moment of $\mathrm{Fe}^{3+}$ (ground state) is approximately:$\mathrm{Cu}^+$ ion is unstable in aqueous solution because it:The contraction in atomic radii along the lanthanoid series ($\mathrm{La}$ to $\mathrm{Lu}$) is called lanthanThe actinoid contraction is greater than the lanthanoid contraction because:Zinc has the lowest enthalpy of atomisation in the first transition series because:Highest oxidation states of transition metals are typically observed only in their:Among $\mathrm{Cr}^{2+}$ and $\mathrm{Fe}^{2+}$, the stronger reducing agent in aqueous solution is:Which element heads group 15 of the periodic table?Going down group 15, the character shifts from non-metallic to:In group 15, arsenic and antimony are classed as:Molecular nitrogen makes up what share of the atmosphere by volume?Sodium nitrate found in the earth's crust is called:Potassium nitrate found in the earth's crust is called:Nitrogen occurs in living things in the form of:Phosphorus is present in the body in living cells and in:Phosphoproteins are found in eggs and in:Arsenic, antimony and bismuth occur mainly as minerals that are:Moscovium is an element that is synthetic and:The atomic number of moscovium is:The common oxidation states in group 15 are minus three, plus three and:Going down group 15, the minus three oxidation state becomes:Which element hardly forms compounds in the minus three state?The rising stability of the plus three state down group 15 is due to:Nitrogen cannot reach the plus five state with halogens because it has no:The ionisation enthalpy of group 15 exceeds that of group:Dinitrogen is a gas whose molecule is:Dinitrogen is produced commercially from air by fractional:Liquid dinitrogen distils out first, boiling at about:Dinitrogen gas is colourless, tasteless, odourless and: