Directions: The picture below shows a model of Earth's layers. Use the picture to answer any questions that follow.
Layer 5
Layer 4
Layer 3
Layer 2
Layer 1
1. Which layers compose the lithosphere?
A layers 6 and 4
B layers 4 and 3
a layers 3 and 2
D layers 2 and 1

- 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

i think so it’s will be b yes i believe its