chemistry
The electronic configuration of halogen is
The electronic configuration of halogen is A ns² np6 B ns² np3 C …
chemistry
chemistry
Which of the following forms the most stable gaseous negative ion?
Which of the following forms the most stable gaseous negative ion? A F B Cl …
chemistry
The element californium belongs to a family of :
The element californium belongs to a family of : A Alkali metal family B Actinide serie…
chemistry
Increasing order of electro negativity is
Increasing order of electro negativity is A Bi B P C S …
chemistry
The number of elements in the 5th period of the periodic table is
The number of elements in the 5th period of the periodic table is A 3 B 9 …
chemistry
The reduction in atomic size with increase in atomic number is a characteristic of elements of-
The reduction in atomic size with increase in atomic number is a characteristic of elements of- A d−block …
chemistry
The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. What is the atomic number of the element which is just below the above element in the periodic table
The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. What is the atomic number of the element which is just below the above elemen…
chemistry
In the modern periodic table , the period indicates the value of:
In the modern periodic table , the period indicates the value of: A Atomic Number B Ato…
chemistry
Arrange S, O and Se in ascending order of electron affinity
Arrange S, O and Se in ascending order of electron affinity A Se B Se …
chemistry
In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in:
In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in: …
chemistry
In the modern periodic table, the period indicates the value of:
In the modern periodic table, the period indicates the value of: A Atomic Number B Atomi…
chemistry
Which of the following oxides is amphoteric in character?
Which of the following oxides is amphoteric in character? A SnO2 B CO2 …
chemistry
The group number, number of valence electrons, and valency of an element with the atomic number 15, respectively, are:
The group number, number of valence electrons, and valency of an element with the atomic number 15, respectively, are: A …
chemistry
On the Paulings electronegativity scale the element next to F is
On the Paulings electronegativity scale the element next to F is A N B Cl …
chemistry
Which of the following properties generally decreases along a period?
Which of the following properties generally decreases along a period? A Ionization Energy B …
chemistry
Representative elements are those which belong to
Representative elements are those which belong to A p and d – Block B s and d – Block …
chemistry
The correct order of first ionization potential among following elements, Be, B, C, N and O is
The correct order of first ionization potential among following elements, Be, B, C, N and O is A B B…
chemistry
The element with atomic number 35 belongs to
The element with atomic number 35 belongs to A d – Block B f – Block …
chemistry
The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is:
The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is: A …
chemistry
Which of the following contains same number of carbon atoms as are in 6.0 g of carbon (C – 12)?
Which of the following contains same number of carbon atoms as are in 6.0 g of carbon (C – 12)? A 6.0 g Ethane …