Question

an element x has an atomic number 6 and atomic mass 12. which scientific notation can represent the elements ​

Answer 1

Answer:

this is carbon...............

Answer 2

An element is Carbon, has a  atomic number of  6 & atomic mass of  12.

• An atom can be defined as a tiny, massive, positively charged nucleus surrounded by electrons at a relatively great distance to make an atom electrically neutral as a whole.
• All nuclei are made up of fundamental particles protons and neutrons. A proton is positively charged with the same magnitude as that electron.
• As the neutron is electrically neutral, the charge on the nucleus is only due to the proton. Hence, the total number of protons in the nucleus is called the atomic number. It is denoted by Z.
• The total number of protons & neutrons in the nucleus is called the Atomic mass number. It is denoted by A

           ∴for the carbon: A= no of proton + no of neutrons

                                 A=12

• A species of nucleus, called nuclide, is represented by symbol X, with atomic number Z as left subscript & mass number A as the right subscript.

                                    represented as ⇒$zX^A$

• Here, according to question z=6 ,A=12
• The element carbon (C) has an atomic number of 6, which means that all neutral carbon atoms contain 6 protons and 6 electrons.
• Carbon is a non-metal and is tetravalent. can make four covalent chemical bonds. Carbon belongs to the group 14. It has many isotopes. Carbon is the 2nd most abundant element in the human body.
• Carbon has three allotropes namely diamond, graphite, and amorphous form.

Hence, The element is Carbon, which has a  atomic number of  6 & atomic mass of  12.

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