Could someone please help me solve number 6.
If you do more it would be appreciated:)

  ¹₀e

Explanation:

Nuclear reaction:

           ²⁷₁₃Al          +        ⁴₂He          →         ³⁰₁₅P   +    ?

Problem is to balance the nuclear equation:

In balancing nuclear reactions, there is conservation of mass numbers and atomic numbers, i.e. the sum of mass numbers(superscript) on the product side must be equal to the sum of the mass numbers on the reactant side.

The sum of the atomic numbers(subscript) on the product side must be equal to the sum of the atomic numbers on the reactant side.

            ²⁷₁₃Al          +        ⁴₂He          →         ³⁰₁₅P   +    ₐⁿX

for the mass numbers:

             27 + 4  = 30 + n

                 31 - 30 = n

                      n = 1

for the atomic numbers;

             13 + 2 = 15 + a

                a = 15 - 15

                a = 0

The specie is ¹₀X

This unknown specie X is indeed a positron.

                       ¹₀e

- 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

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i