No, if only a single electron is emitted at a time in the Young's Double Slit Experiment (YDSE), it would not produce an interference pattern in a single attempt. The interference pattern arises due to the wave-like nature of electrons. However, when a single electron is emitted, it behaves as a particle rather than a wave and does not exhibit interference.
In the YDSE, the interference pattern is observed when a beam of electrons or photons is passed through two closely spaced slits. The waves associated with each slit overlap and interfere with each other, leading to the characteristic pattern on a screen placed behind the slits. This pattern consists of alternating bright and dark fringes.
However, when you send individual electrons, they behave as localized particles and do not interfere with themselves. Each electron will pass through one of the slits and land on the screen as a distinct particle, without showing any interference pattern. Over time, if a large number of electrons are sent through the slits individually, their collective behavior will gradually reveal the interference pattern. This is known as the "particle-wave duality" of quantum mechanics.