How many protons, neutrons, and electrons are there in an atom of (a) 10b5, (b) 36ar, (c) 85sr38, and (d) carbon-il?

Here's what I get.

Explanation:

The isotopic symbol for an atom is

The atomic number (Z) is the number of protons (p) in the nucleus.

In a neutral atom, the number of electrons (e) equals the number of protons. n = e

The mass number (A) is the number of protons plus the number of neutrons (n).

A = p + n or

n = A - p

(a)

p = 5

e = 5

n = 10 - 5 = 5

(b)

p = 18

e = 18

n = 36 - 18 = 18

(c)

p = 38

e = 38

n = 85 - 38 = 47

(d)

p = 5

e = 6

n = 11 - 6 = 5

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements