Match the colours of the resulting solutions listed below with the indicators 1 point listed below. You may use a number more than once. Orange IV
Indigo Carmine Chlorophenol Red Thymolphthalein
Use the following information to answer the next question.
A different indicator is added to each of four different samples of recycled
water with a pH of 5.6.
Colours of Resulting Solutions
1 Blue
2 Colourless
3 Yellow
4 Orange
Your answer

- 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