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otez555 [7]
3 years ago
10

Enter the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation AZX

Chemistry
2 answers:
Sergio [31]3 years ago
3 0
<span>40 20Ca this is the appropriate symbol for an isotope of calcium-42 corresponding to the isotope notation AZX</span><span />
Evgesh-ka [11]3 years ago
3 0

Answer: _{20}^{42}\textrm{Ca}

Explanation:

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Given mass number of calcium= 42

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

Atomic number = Number of electrons = Number of protons

General representation of an element is given as: _Z^A\textrm{X}

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

Calcium is the 20th element of the periodic table with atomic number of 20 and is written as _{20}^{42}\textrm{Ca}

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