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GarryVolchara [31]
2 years ago
6

Ldentify the atom whose nucleus is composed of 56 protons and 82 neutrons.

Chemistry
1 answer:
kenny6666 [7]2 years ago
4 0

Answer:

Barium-138

Explanation:

The mass number is the atomic number + the number of neutrons. ... Identify the atom whose nucleus is composed of 56 protons and 82 neutrons. Barium-138 (the number of protons identifies the atom) Gallium has two naturally occurring isotopes: Ga-69 with a mass of 68.9256 amu and a natural abundance of 60.11% and Ga-71.

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Answer:

i)  B

ii) D

Explanation:

<em>Bond length is determined by the size of the atoms involved and the bond order </em>

A) C-I

B)  H-I

answer : H-I has the shortest bond length because H has an electronegativity value of 2.2  while C has an electronegativity value of 2.5 hence the bond between H-I is greater than C - I due the electronegativity difference between H-I is greater as well.

C) H-Cl

D) H-I

answer :  H-Cl has the shortest bond length due the electronegativity difference between H-CI is greater as well.

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2 years ago
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sergejj [24]
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adoni [48]

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