Question

An atom has 27 protons and 32 neutrons. Which of the following symbols is correct for this atom?

59Co
32Co
59Ge
27Ge

Answer 1

59Co
To identify the element, look at the atomic number, which is the amount of protons. This is cobalt.
The notation used above to write the element is mass number-chemical symbol, and so to find the mass number, simply add the number of protons to the number of neutrons. This gives you 59. Therefore, the correct symbol is 59Co

Answer 2

a. $^{59}Co$

Atomic structure:

• In a neutral atom, number of electrons and protons are same which is same as that of the atomic number of an element.
• Number of neutrons is equal to the difference between mass number and atomic number or number of protons.

Given:

An atom has 27 protons and 32 neutrons.

So from the given data we can infer that the element will have the atomic number as 27. (∵Number of protons= Atomic number)

Therefore, the element having atomic number 27 is cobalt, having an atomic symbol: Co.

Now,

Mass number= Number of protons+ Number of neutrons

∴ Mass number= 27+32=59

So, the correct symbol for this atom will be:

$^{59}Co$

Learn more:

brainly.com/question/11067697