What must be true of the two highlighted triangles in the image? check all that apply.

hi your question lacks the required options and diagram here is the complete question and diagram.

What must be true of the two highlighted triangles in the image? Check all that apply. | 1. The speed of the planet is the same for both triangles. | 2. The time frame is the same for both triangles. | 3. The area is the same for both triangles. | 4. The gravitational force is the same for both triangles.

Answer : The time frame is the same for both triangles ( 2 )

               The area is the same for both triangles ( 3 )

Explanation:

according to Kepler's second law of  planetary  motion which states that "That the line segment joining the planet and the sun sweeps equal areas during equal intervals of time"

according to Kepler's second law of planetary motion the highlighted triangles in the image the time frame and the area is the same for both of them and this is because they have line segments that joins the sun to the planet which is moving around the sun in a elliptical orbit. hence option 2 and option 3 is true for the highlighted triangles.

- 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