Periodic Classification Of Elements - Study Mode

[#101] With the increase in atomic number in period
Correct Answer

(C) Metallic character decreases

[#102] The atomic number of lanthanides is in . . . . . . . . range?
Correct Answer

(C) 58 - 71

[#103] Which of the following is not a feature of transition elements?
Correct Answer

(B) They are all air

[#104] Which of the following classifications was based on atomic masses?
Correct Answer

(C) Dobereiner, Newlands and Mendeleev

[#105] Which of the following elements has the smallest atomic radius in the fourth period?
Correct Answer

(D) bromine