Identify ‘X’ in the sequence

The carbon dioxide molecule is linear. The electronegativities of C and O are 2.5 and 3.5 respectively. Based on these values and on consideration of molecular geometry, the bond is and the molecule is

Electronegativity refers to the ability to attract shared electrons by an atom in a molecule. The difference in electronegativities between two atoms indicates the type of bond that forms when they combine. If the difference in electronegativities between the two atoms is lesser, neither atom can remove the shared electrons from the other, and the bond is covalent. If the difference in electronegativities is higher, the atom will completely remove the bonding electrons from the other atom (electron transfer), and the bond will be ionic. So, metals with low electronegativities bond with nonmetals with high electronegativities to form ionic compounds.
A bond can be so polar that an electron transfers from one atom to another, resulting in a true ionic bond.
¶So how can we determine the degree of polarity? Scientists devised an electronegativity scale to determine how many electrons atoms of any element attract. An electronegativity is a unitless number; the higher the number, the more electrons an atom attracts.

The hybridization of atomic orbitals of N in and are respectively

Polarizing, action of on anion is stronger than that of because

Two forces, each of magnitude F, have a resultant of the same magnitude F. The angle between the two forces is

A charge is fired through a magnetic field. The force acting on it is maximum when the angle between the direction of motion and magnetic field is

Fleming’s left and right hand rules are used in

A loop is kept so that its center lies at the origin of the coordinate system. A magnetic field has the induction B along z-axis as shown in the figure.

A conducting loop is pulled with a constant velocity towards a region of uniform magnetic field of induction B as shown in the figure. Then the current involved in the loop is (d > r)

When a magnet is released from rest along the axis of a hollow conducting cylinder situated vertically as shown in the figure, then

Shown in the figure is a small loop that is kept coaxially with the bigger loop. If the slider moves from A to B, then

Which one of the following is a negatively charged particle?

As shown in the figure, a magnet is moved with a fast speed towards a coil at rest. Due to this induced emf, induced charge and induced current in the coil is e, q and I respectively. If the speed of the magnet is doubled, the incorrect statement is

In the circuit of figure the bulb will become suddenly bright if

A magnet NS is suspended from a spring and while it oscillates the magnet moves in and out of the coil C. If the coil is now connected to galvanometer G as shown in the figure, then the magnet oscillates, G shows