Question

refer the pic and answer the match the following ​

Answer 1

Explanation:

Argon = 22 neutrons

carbon = 8 neutrons

potassium = 21 netrons

nitrogen = 7 neutrons

atomic number of an element is the number of protons or electrons in that element else are neutrons .

exmple: argon , atomic no. = 18

mass no. = 40

number of neutrons =40 - 18 = 22 ans.

Answer 2

Answer:

a - 4

b - 3

c - 2

d - 1

Explanation:

a) No. of neutrons(n) = Mass No.(A) - Atomic No.(Z)

= 40 - 18 = 22

b) n = A - Z

= 14 - 6 = 8

c) n = A - Z

= 40 - 19 = 21

d) n = A - Z

= 14 - 7 = 7

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