Explanation:
Electronegativity is the property of an atom that attracts the shared pair of an electron to itself. There is a trend in the periodic table.
While moving down in a group, the electronegativity decreases. This is due to the reason that as we move down the number of shells added and so the electron become very far from the pull of the nucleus.
As we move across a period the electronegativity increases. This is because of the no. of charge on the nucleus increase.
Answer:
The community may regress to the denial stage or stagnate in the fragmentation stage.
Explanation:
An habitat is a place where organisms live. It provides the basic essentials of living for the organisms. Examples are; terrestrial, aquatic etc. Fragmentation of an habitat can occur due to some natural or artificial processes.
Habitat fragmentation is the process in which a large area of habitat is transformed into a number of smaller areas. These smaller patches are segregated from each other.
This may cause the extinction of some species due to edge effect.
If actions taken during the fragmentation stage are partially successful, the community in the habitat may regress to the denial stage or stagnate in the fragmentation stage.
Astronomers discover an exoplanet, a planet orbiting a star other than the sun, that has an orbital period of 4.50 earth years in a circular orbit around its star, which has a measured mass of 3.60×1030 kg.
The length of time it takes an astronomical object to complete one orbit around another object is known as the orbital period (also known as the revolution period). In astronomy, it typically refers to bodies like planets or asteroids revolving about the Sun, as well as moons circling other stars, exoplanets, and double stars.
A year refers to the orbital period of the Earth. A day is a period of rotation. 24 hours make up a solar day, although the Earth rotates around the sun by one degree every day. We can determine the orbital period by noting the interval between transits. If the mass of the orbiting star is known, one may use Kepler's Third Law to calculate the orbital radius of the planet (R3=T2Mstar/Msun; the radius is in AU and the period is in earth years).
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