An isotope with a mass number of 193 has 116 neutrons. What is the atomic number of this

Chemistry

1 answer:

Zinaida [17]3 years ago

6 0

Answer:

Atomic number of this isotope = 77

Explanation:

Given that,

Mass number = 193

No of neutrons = 116

We need to find the atomic no of this isotope.

We know that,

Atomic mass = No of protons + No. of neutrons

Also, atomic no = no of protons

So,

Atomic mass = atomic no + No. of neutrons

⇒ Atomic no = Atomic mass - no of neutrons

Atomic no = 193 - 116

Atomic no = 77

Hence, 77 is the atomic no of the isotope.

You might be interested in

the gravitational force between two objects depends on the distance between the objects and each object?

Nina [5.8K]

Answer:

Gravitational force between two objects depends on: a. The weight of the objects c. The mass of each object b. The distance between the objects d. Both b and c Please select the best answer from the choices provided A B C D

✓d

7 0

3 years ago

Metals lose electrons under certain conditions to attain a noble gas electron configuration. How many electrons must be lost by

viva [34]

Answer:

2 electrons

E. neon

Explanation:

Metals lose electrons under certain conditions to attain a noble gas electron configuration. Magnesium has 12 electrons and its electron configuration is

1s² 2s² 2p6⁶ 3s²

When magnesium loses 2 electrons, it acquires the electron configuration of neon (10 electrons).

5 0

3 years ago

The decomposition of ethyl amine, C2H5NH2, occurs according to the reaction: C2H5NH2(g)⟶C2H4(g)+NH3(g) At 85∘C, the rate constan

statuscvo [17]

Answer:

2.772 seconds

Explanation:

Given that;

t1/2 = 0.693/k

Where;