All the s-block elements of the periodic table are placed in the groups….
All the s-block elements of the periodic table are placed in the groups….
Options
(a) IA and IIA (b) IIIA and IVA (c) B sub group (d) VA to VIIA
Correct Answer:
IA […]
Classification of Elements and Periodicity
The long form of periodic table is based on
The long form of periodic table is based on
Options
(a) mass of the atom (b) atomic number (c) shapes of he atom (d) electronegative
Correct Answer:
atomic number
Explanation:
No explanation available. […]
Which of the following inert gases does not have eight electrons
Which of the following inert gases does not have eight electrons in the outermost orbit
Options
(a) Kr (b) Ne (c) He (d) Ar
Correct Answer:
He
Explanation:
It has two electron in its […]
Element having atomic no.of 56 belongs to which of the following block
Element having atomic no.of 56 belongs to which of the following block of periodic table
Options
(a) p-block (b) d-block (c) f-block (d) s-block
Correct Answer:
s-block
Explanation:
Consider Barium having atomic number 56
As the nuclear charge increases from neon to calcium the orbital energy
As the nuclear charge increases from neon to calcium the orbital energy
Options
(a) increases (b) increase very rapidly (c) increases very slowly (d) fall
Correct Answer:
increases
Explanation:
With the increase in atomic […]
Mg and Li are similar in their properties due to
Mg and Li are similar in their properties due to
Options
(a) same e/m ratio (b) same electron affinity (c) same group (d) same ionic potential
Correct Answer:
same e/m ratio
Explanation: […]
Which of the following gas is called rare gas
Which of the following gas is called rare gas
Options
(a) Krypton (b) Neon (c) Argon (d) All of these
Correct Answer:
All of these
Explanation:
No explanation available. Be the first to […]
High ionisation energy indicates that
High ionisation energy indicates that
Options
(a) atom size is large (b) atom size is small (c) atom is metallic (d) valence electrons are held tightly by the atom
Correct Answer:
atom size […]
Of the following compounds the most acidic is
Of the following compounds the most acidic is
Options
(a) As₂O₃ (b) P₂O₅ (c) Sb₂O₃ (d) Bi₂O₃
Correct Answer:
P₂O₅
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which of the following is the smallest anion
Which of the following is the smallest anion
Options
(a) O²⁻ (b) S²⁻ (c) Cl⁻ (d) Br⁻
Correct Answer:
O²⁻
Explanation:
No explanation available. Be the first to write the explanation for this […]