a chlorine atom has 7 valence electrons in its third shell.
what will it do when forming an ion?

The chlorine atom will accept a lone pair of electron from another element in other to complete its outermost shell

Explanation:

The chlorine atom will accept a lone pair of electron from another element in other to complete its outermost shell.

Chlorine being an unstable element will accept a lone pair of electron from another element like sodium to form a negatively charged ion(acceptor) thereby becoming stable. Sodium being the donor will easily donate its lone pair of electron to chlorine through covalent bonding thereby becoming the donor and forming a positively charged ion(Na+).

Note that for an element to be stable, such element may have a obey the duplet or octet rule I.e must possess 2 electrons or 8 electrons in its outermost shell.

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards