As distance between two objects increases, gravitational force:
decreases right?
increases
decreases
remains the same

The correct answer is B. Decreases

Explanation:

Gravitational force is a natural force that occurs as objects composed of mass attract others. This applies to planets, stars, and other massive objects but also objects with less mass. Additionally, the gravitational force is described through the formula F (Gravitational Force) = G (Gravitational constant) M m (mass of the two objects) / r2 (distance).

This shows the distance is key for gravitational force; indeed, as distance increases gravitational force decreases and vice versa. This explains why the gravitational force has a great effect on all elements in the Earth, but other planets do not have this effect as the gravitational force exerted by these objects is weak due to the great distance. Thus, as the distance between two objects increases, the gravitational force decreases.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

c. is the answer

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