Question

15 elementos de la tabla periódica con masa atómica, número atómico,numeros de protones y electrones

Answer 1

Están en el orden que escribiste, solo escribe sin paréntesis...^_^

(Br)(79,909)(35)(35)(35)

(Ba)(137,34)(56)(56)(56)

(Zr)(91,220)(40)(40)(40)

(Mn)(54,948)(25)(25)(25)

(Cr)(51,996)(24)(24)(24)

(O)(15,999)(8)(8)(8)

(Hf)(178,49)(72)(72)(72)

(Co)(58,933)(27)(27)(27)

(Ag)(107,87)(47)(48)(47)

(Hg)(200,59)(80)(80)(80)

(Sb)(121,76)(51)(51)(51)

(Bl)(208,98)(83)(83)(83)

(Se)(78,971)(34)(34)(34)

(B)(10,81)(5)(5)(5)

(Ga)(69,723)(31)(31)(31)