DadeO999 DadeO999

15-12-2020
Chemistry

contestada

A single atom of an element has 21 neutrons, 20 electrons, and 20 protons, which elementis it?

Respuesta :

abigailgillman94 abigailgillman94

15-12-2020

Answer:

Calcium

Explanation:

The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.

Answer Link

Otras preguntas

What is the president’s purpose for including these details? to entertain his listeners with shocking stories of protest to entertain his listeners with colorfu

Please help!!!! Geometry

Find the area of a regular hexagon with a base of 15 and an apothem of 20.

Choose the answer that best completes the sentence. Mi amigo __________ (mirar) la pizarra. miro mira miras miran

Chemicals A and B react according to the equation A + B → C. How will the concentrations of each component of the reaction change over time?

x varies directly as y, and x = 153 when y = 9. Find x when y = 13.

How do scientists determine the age of the solar system?

Gaussian surfaces a and b enclose the same positive point charge. the area of surface a is two times larger than that of surface b. how does the total electric

The north atlantic treaty organization is an example of ________. mutually assured destruction a bilateral treaty a multilateral treaty the domino theory deterr

Aimi is making Valentine’s Day cards for everyone in her class. She plans to use a whole sheet of paper for each of her 6 closest friends. She will use 1/8 of a