This is how zirconium appears in the periodic table. rounded to the nearest whole number, how many electrons are in an atom of zirconium? 40 51 91 131

40

Step-by-step explanation:

Zirconium is the 40th element in the periodic table. It means its atomic number (the number of protons inside the nucleus) is 40. But atoms are electrically neutral: this means that their number of electrons matches the number of protons. Therefore, since the atom of zirconium has 40 protons, it also has 40 electrons.

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.