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the formula of a salt is xcl. the x-ion in this salt has 28 electrons. the metal x is

The metal is Copper(Cu) and the ion is

Explanation:

The given compound is XCl.

As the compound is saild to be a salt,Oxidation state of chlorine in the salt= -1(Oxidation state of Cl in all salts = -1)

Concept:

Oxidation state of a compound is zero(Sum of Oxidation states of all its atoms).

Now let the Oxidation state of X be x,

Using the concept,

Oxidation state of X + Oxidation state of Cl = 0

x + (-1) = 0

x = +1;

Therefore Oxidation state of X = +1,

So X lost 1 electron to form the compound XCl,

So, we can say that X originally had 29 electrons.

The only element in the periodic table with 29 electrons in the ground state is Copper(Cu).

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s