Question

write the correct valencyof the given element from its atomic number. 1.neon-(atomic number-10) 2.silicon-(atomic number-16) 3.copper-(atomic number-29) 4.clorine-(atomic number-17)​

Answer 1

Answer:

Step-by-step explanation:

neon(10) - e.c. = 2,8           valency = 0

silicon(16) - e.c. = 2,8,6       valency = -2

copper(29) - e.c.= 2,8,18,1   valency = +1

Chlorine(17) - e.c. = 2,8,7     valency = -1