Chemistry, 09.04.2020 17:25 Mune6745

7.Give me an atom with the following characteristics,
a. Halogen
b. Chalcogens
c. Alkali metall
d. Boron
e. Lanthanide series
c. Alkaline Earth metal
g. Transition metal
h. Nobel gas
Help ASAP!!

Answers

Answer from: idk5233

(description atoms) are made of tiny particles called protons, neutrons and electrons.

Explanation:

Answer from: alex7881

A. 25Mn45^+

B. 45Rh69^+2

C. 53I142^-

D. 97Bk^243

Explanation:

Generally Atomic mass (A)= no of protons (p) + no of neutrons (n)

No of Neutrons (n)=A-p

No of protons = Atomic number

Symbol for nulclide: zX^A

Z is Atomic number, A is Atomic mass

And X is symbol of element

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7.Give me an atom with the following characteristics,
a. Halogen
b. Chalcogens
c....