Which of the following elements is man-made (synthetic)?
- A$Ra$
- B$Fr$
- C$Rn$
- D$Lr$
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Similar Questions
How many of the following metal ions have similar values of spin-only magnetic moment in the gaseous state?
(Given: Atomic number: $V, 23; Cr, 24; Fe, 26; Ni, 28$)
$V^{3+}, Cr^{3+}, Fe^{2+}, Ni^{3+}$
(Given: Atomic number: $V, 23; Cr, 24; Fe, 26; Ni, 28$)
$V^{3+}, Cr^{3+}, Fe^{2+}, Ni^{3+}$
Which of the following is ferromagnetic?
Easy
View SolutionWhich of the following series of transition elements has the general electronic configuration $[Kr] 4d^{1-10} 5s^{0-2}$?
Find the correct order of the given elements with respect to their size.
Most transition metals exhibit several characteristic properties. Which of the following statements are correct?
$I$: Form sets of compounds which display different oxidation states of the metal.
$II$: Form coloured ions in solution.
$III$: Burn vigorously in oxygen.
$IV$: Act as catalysts.
$I$: Form sets of compounds which display different oxidation states of the metal.
$II$: Form coloured ions in solution.
$III$: Burn vigorously in oxygen.
$IV$: Act as catalysts.
Easy
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