MCQ
Astatine is a
  • Halogen
  • B
    Rare earth element
  • C
    Alkaline earth metal
  • D
    None of these

Answer

Correct option: A.
Halogen
a
$(a)$ Elements of group halogen are : $F,\,\,Cl,\,\,Br\,\,I$ and $At$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Which of the following order 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)

$(4) S > Se > Te > O [EA]$

Identify the statement that is not correct as far as structure of diborane is concerned
How many of unpaired electron in carbon atom is :
Count the number of properties which have higher value for $'O'$ atom than that of $'S'$ : Ionisation potential, Electron affinity, Covalent radius, Electronegativity.
What is the decreasing order of reactivity amongest the following compounds towards aromatic electrophilic substitution.

$(i)$ Chlorobenzene

$(ii)$ Benzene

$(iii)$ Anilinium chloride

$(iv)$ Toluene

Which of the following is correct representation of the reaction when $BF_3$ reacts with ammonia ?
The position of both an electron and a helium atom is known within $1.0\,nm$ and the momentum of the electron is known within $50 \times {10^{ - 26}}\,kg\,m{s^{ - 1}}$. The minimum uncertainty in the measurement of the momentum of the helium atom is
Identify the binary mixture$(s)$ that can be separated into individual compounds, by differential extraction, as shown in the given scheme.

$(A)$ $C _6 H _5 OH$ and $C _6 H _5 COOH$

$(B)$ $C _6 H _5 COOH$ and $C _6 H _5 CH _2 OH$

$(C)$ $C _6 H _5 CH _2 OH$ and $C _6 H _5 OH$

$(D)$ $C _6 H _5 CH _2 OH$ and $C _6 H _5 CH _2 COOH$

The major product of the following reaction is
The aqueous solution of $AlC{l_3}$ is acidic due to the hydrolysis of