Which statement is always true according to vsepr theory?
(a) the shape of a molecule is determined only by repulsions among bonding electron groups.
(b) the shape of a molecule is determined only by repulsions among nonbonding electron groups.
(c) the shape of a molecule is determined by the polarity of its bonds.
(d) the shape of a molecule is determined by repulsions among all electron groups on the central atom (or interior atoms, if there is more than one).

The correct option is D.

Explanation:

VSEPR theory is defined as the shape of the molecules determined by the repulsion between electron pairs in the valence cell. Valence cell electrons are two types:

1) Bonding electrons (sigma bonds)

2) Anti-bonding electrons or lone pairs.

These lone pairs, and bonds helps to form the shape which keeps these electrons separate as possible. For example: two electron pairs forming a linear structure such as CO2 contains two double bonds with zero lone pair electrons, and forming 180 degree bond angles at the carbon (central) atom.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation