Question : Which of the following statements is correct?

Option 1: Atomic radius increases across a period and decreases down a group in the periodic table.

Option 2: Atomic radius decreases across a period and increases down a group in the periodic table.

Option 3: Atomic radius decreases across a period and down a group in the periodic table.

Option 4: Atomic radius increases across a period and increases down a group in the periodic table.

Question : What is the Atomic Number of the element Einsteinium?

Option 1: 98

Option 2: 101

Option 3: 99

Option 4: 100

Question : Which radioactive element with atomic number 43 in the modern periodic table is unstable, and the half-lives of all its isotopes are relatively short, from 4.2 million years to 5.0 s?

Option 1: Nobelium

Option 2: Promethium

Option 3: Neptunium

Option 4: Technetium

Question : Who among the following is not one of the recipients of the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2019?

Option 1: M. Stanley Whittingham

Option 2: Michael Kremer

Option 3: Esther Duflo

Option 4: Abhijit Banerjee

Question : In which element group of the periodic table are fluorine, chlorine, bromine and iodine included?

Option 1: Actinides

Option 2: Chalcogen

Option 3: Lanthanides

Option 4: Halogens