The type of bonding in \({Cu(NH_3)_4}^2\)+ is?
coordinate covalent
electrovalent
metallic
covalent
Correct answer is A
\({Cu(NH_3)_4}^2\)+: The bonding in this ion consists of coordinate covalent bonds with all bonding electrons supplied by the nitrogen atom.
Which quantum number divides shells into orbitals?
Principal
Arzimuthal
Magnetic
Spin
Correct answer is B
The principal quantum number, n, describes the energy of an electron and the most probable distance of the electron from the nucleus.
In other words, it refers to the size of the orbital and the energy level an electron is placed in.
The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.
are positively charged
are negatively charged
have mass
travel in straight lines
Correct answer is D
Cathode rays travel in a straight line and can cast sharp shadows.
Cathode rays are negatively charged.
Electric field and magnetic field deflect cathode rays.
If an atom is represented as \( _{11}^{23}X \), which of the following deduction is correct?
it contains 12 protons
it forms a covalent chloride
its atomic number is 23
it is an alkali metal
Correct answer is D
Sodium has atomic / proton number of 11 and belongs to Group 1[alkali metals] on the periodic table
forces of attraction and repulsion are in equilibrium
gaseous molecules can occupy any available space
gaseous molecules will continue their motion indefinitely
gases can be compressed
Correct answer is C
An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.