The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.
The species Ar,K⁺ and Ca²⁺ contain the same number of electrons.In which order do their radii increase
Options
(a) Ca²⁺ < Ar < K⁺ (b) Ca²⁺ < K⁺ < Ar (c) K⁺ < Ar […]
Classification of Elements and Periodicity
Which of the following orders of ionic radii is correctly represented
Which of the following orders of ionic radii is correctly represented
Options
(a) H⁻ > H⁺ > H (b) Na⁺ > F⁻ > O²⁻ (c) F⁻ > O²⁻ > Na⁺ (d) Al³⁺ > Mg²⁺ […]
Element having maximum electron affinity is
Element having maximum electron affinity is
Options
(a) F₂ (b) Cl₂ (c) Br₂ (d) I₂
Correct Answer:
Cl₂
Explanation:
Electron affinity generally decreases down the group due to decrease in the value of […]
The electronic configuration of chalcogens is
The electronic configuration of chalcogens is
Options
(a) ns²np² (b) ns²np³ (c) ns²np⁴ (d) ns²np¹
Correct Answer:
ns²np⁴
Explanation:
The elements of group VI A of the periodic table are called chalcogens . […]
The first ionisation potential will be maximum for
The first ionisation potential will be maximum for
Options
(a) lithium (b) hydrogen (c) uranium (d) iron
Correct Answer:
hydrogen
Explanation:
No explanation available. Be the first to write the explanation for this […]
The amount of energy,which is released due to the addition of extra electron
The amount of energy,which is released due to the addition of extra electron to the outermost orbital of gaseous atom,is called
Options
(a) ionisation potential (b) electron affinity (c) electron capacity (d) electronegativity
The total number of electrons present in all the p-orbitals of bromine is
The total number of electrons present in all the p-orbitals of bromine is
Options
(a) 18 (b) 5 (c) 35 (d) 17
Correct Answer:
35
Explanation:
No explanation available. Be the first to […]
Which is a metalloid
Which is a metalloid
Options
(a) Arsenic (b) Oxygen (c) Phosphorus (d) Manganese
Correct Answer:
Arsenic
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
In a period, the elements are arranged in strict sequence of
In a period, the elements are arranged in strict sequence of
Options
(a) increasing charge in the nucleus (b) equal charges in the nucleus (c) decreasing charge in the nucleus (d) constant charge […]
Which of the following is the most electropositive element
Which of the following is the most electropositive element
Options
(a) Phosphorous (b) Magnesium (c) Aluminium (d) Sulphur
Correct Answer:
Magnesium
Explanation:
No explanation available. Be the first to write the explanation for […]