Question

give the correct answer..?​

Answer 1

$\huge \sf {\orange {\underline {\pink{\underline {A᭄ɴsᴡᴇʀ࿐ \ :- }}}}}$

Atomic number:

The atomic number is the number of protons in the nucleus of an atom. ... The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.

Mass number:

The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.

Isotopes and give an example of isotopes:

The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number. For example, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13, and 14, respectively.

◕ᴗ◕✿hope it's helpful to you ◕ᴗ◕✿

Answer 2

Answer:

$꧁༒༺࿙αɳรωεɾ࿚༻༒꧂$

Explanation:

1. The atomic number is the number of protons in the nucleus of an atom. ... The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.
2. The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.
3. Atoms having the same number of protons (Z) but different number of neutrons (N) are isotopes. Atoms having the same mass number (A) are isobars. Atoms having the same number of neutrons (N) but a different number of protons (Z) are isotones.

For example, mass number of sodium is 23 g/mol. iii) Isotopes are elements with the same atomic number but different mass numbers. Example, hydrogen has 3 isotopes - protium (1H1), deuterium (2H1) and tritium (3H1). iv) Isobars are elemnts which have different atomic numbers but the same mass number.