Periodic Table and Periodicity · Chemistry · KCET
MCQ (Single Correct Answer)
1
The correct order of first ionisation enthalpy of given elements is
KCET 2023
2
A pair of amphoteric oxides is
KCET 2023
3
In which one of the following pairs, both the elements does not have $$(n-1) d^{10} n s^2$$ configuration in its elementary state?
KCET 2023
4
Amphoteric oxide among the following
KCET 2022
5
The property of halogens which is not correctly matched is
KCET 2022
6
Which noble gas has least tendency to form compounds?
KCET 2022
7
Elements $$X, Y$$ and $$Z$$ have atomic numbers 19, 37 and 55 respectively. Which of the following statements is true about them ?
KCET 2022
8
The third ionisation enthalpy is highest in
KCET 2021
9
The first ionisation enthalpy of the following elements are in the order :
KCET 2019
10
Which of the following is the correct order of radius?
KCET 2018
11
Which of the following is an amphoteric oxide?
KCET 2018
12
The electronic configuration of transition element " $X$ ", $[\mathrm{Ar}] 3 d^5$ is oxidation state is +3 . What is its atomic number?
KCET 2018